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<div class="section" id="changelog">
<h1>Changelog<a class="headerlink" href="#changelog" title="Permalink to this headline">¶</a></h1>
<div class="section" id="python-3-3-2">
<h2>Python 3.3.2<a class="headerlink" href="#python-3-3-2" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 13-May-2013</em></p>
<div class="section" id="core-and-builtins">
<h3>Core and Builtins<a class="headerlink" href="#core-and-builtins" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17237">Issue #17237</a>: Fix crash in the ASCII decoder on m68k.</li>
<li><a class="reference external" href="http://bugs.python.org/17408">Issue #17408</a>: Avoid using an obsolete instance of the copyreg module when
the interpreter is shutdown and then started again.</li>
<li><a class="reference external" href="http://bugs.python.org/17863">Issue #17863</a>: In the interactive console, don’t loop forever if the encoding
can’t be fetched from stdin.</li>
<li><a class="reference external" href="http://bugs.python.org/17867">Issue #17867</a>: Raise an ImportError if __import__ is not found in __builtins__.</li>
<li><a class="reference external" href="http://bugs.python.org/17857">Issue #17857</a>: Prevent build failures with pre-3.5.0 versions of sqlite3,
such as was shipped with Centos 5 and Mac OS X 10.4.</li>
<li><a class="reference external" href="http://bugs.python.org/17413">Issue #17413</a>: sys.settrace callbacks were being passed a string instead of an
exception instance for the ‘value’ element of the arg tuple if the exception
originated from C code; now an exception instance is always provided.</li>
<li><a class="reference external" href="http://bugs.python.org/17782">Issue #17782</a>: Fix undefined behaviour on platforms where
<tt class="docutils literal"><span class="pre">struct</span> <span class="pre">timespec</span></tt>‘s “tv_nsec” member is not a C long.</li>
<li><a class="reference external" href="http://bugs.python.org/17715">Issue #17715</a>: Fix segmentation fault from raising an exception in a __trunc__
method.</li>
<li><a class="reference external" href="http://bugs.python.org/16447">Issue #16447</a>: Fixed potential segmentation fault when setting __name__ on a
class.</li>
<li><a class="reference external" href="http://bugs.python.org/17669">Issue #17669</a>: Fix crash involving finalization of generators using yield from.</li>
<li><a class="reference external" href="http://bugs.python.org/17619">Issue #17619</a>: Make input() check for Ctrl-C correctly on Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/17610">Issue #17610</a>: Don’t rely on non-standard behavior of the C qsort() function.</li>
<li><a class="reference external" href="http://bugs.python.org/17357">Issue #17357</a>: Add missing verbosity output when using -v/-vv.</li>
</ul>
</div>
<div class="section" id="library">
<h3>Library<a class="headerlink" href="#library" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17606">Issue #17606</a>: Fixed support of encoded byte strings in the XMLGenerator</li>
</ul>
<blockquote>
<div><dl class="docutils">
<dt>.characters() and ignorableWhitespace() methods. Original patch by Sebastian</dt>
<dd>Ortiz Vasquez.</dd>
</dl>
</div></blockquote>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17732">Issue #17732</a>: Ignore distutils.cfg options pertaining to install paths if a
virtual environment is active.</li>
<li><a class="reference external" href="http://bugs.python.org/1159051">Issue #1159051</a>: Back out a fix for handling corrupted gzip files that
broke backwards compatibility.</li>
<li><a class="reference external" href="http://bugs.python.org/17915">Issue #17915</a>: Fix interoperability of xml.sax with file objects returned by
codecs.open().</li>
<li><a class="reference external" href="http://bugs.python.org/16601">Issue #16601</a>: Restarting iteration over tarfile no more continues from where
it left off. Patch by Michael Birtwell.</li>
<li><a class="reference external" href="http://bugs.python.org/17289">Issue #17289</a>: The readline module now plays nicer with external modules
or applications changing the rl_completer_word_break_characters global
variable. Initial patch by Bradley Froehle.</li>
<li><a class="reference external" href="http://bugs.python.org/12181">Issue #12181</a>: select module: Fix struct kevent definition on OpenBSD 64-bit
platforms. Patch by Federico Schwindt.</li>
<li><a class="reference external" href="http://bugs.python.org/14173">Issue #14173</a>: Avoid crashing when reading a signal handler during
interpreter shutdown.</li>
<li><a class="reference external" href="http://bugs.python.org/16316">Issue #16316</a>: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions.</li>
<li><a class="reference external" href="http://bugs.python.org/15902">Issue #15902</a>: Fix imp.load_module() accepting None as a file when loading an
extension module.</li>
<li><a class="reference external" href="http://bugs.python.org/17802">Issue #17802</a>: Fix an UnboundLocalError in html.parser. Initial tests by
Thomas Barlow.</li>
<li><a class="reference external" href="http://bugs.python.org/15535">Issue #15535</a>: Fix namedtuple pickles which were picking up the OrderedDict
instead of just the underlying tuple.</li>
<li><a class="reference external" href="http://bugs.python.org/17192">Issue #17192</a>: Restore the patch for <a class="reference external" href="http://bugs.python.org/11729">Issue #11729</a> which was ommitted in
3.3.1 when updating the bundled version of libffi used by ctypes. Update
many libffi files that were missed in 3.3.1’s update to libffi-3.0.13.</li>
<li><a class="reference external" href="http://bugs.python.org/17358">Issue #17358</a>: Modules loaded by imp.load_source() and load_compiled() (and by
extention load_module()) now have a better chance of working when reloaded.</li>
<li><a class="reference external" href="http://bugs.python.org/17353">Issue #17353</a>: Plistlib emitted empty data tags with deeply nested datastructures</li>
<li><a class="reference external" href="http://bugs.python.org/11714">Issue #11714</a>: Use ‘with’ statements to assure a Semaphore releases a
condition variable. Original patch by Thomas Rachel.</li>
<li><a class="reference external" href="http://bugs.python.org/17795">Issue #17795</a>: Reverted backwards-incompatible change in SysLogHandler with
Unix domain sockets.</li>
<li><a class="reference external" href="http://bugs.python.org/17555">Issue #17555</a>: Fix ForkAwareThreadLock so that size of after fork
registry does not grow exponentially with generation of process.</li>
<li><a class="reference external" href="http://bugs.python.org/17707">Issue #17707</a>: multiprocessing.Queue’s get() method does not block for short
timeouts.</li>
<li>Isuse #17720: Fix the Python implementation of pickle.Unpickler to correctly
process the APPENDS opcode when it is used on non-list objects.</li>
<li><a class="reference external" href="http://bugs.python.org/17012">Issue #17012</a>: shutil.which() no longer fallbacks to the PATH environment
variable if empty path argument is specified. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/17710">Issue #17710</a>: Fix pickle raising a SystemError on bogus input.</li>
<li><a class="reference external" href="http://bugs.python.org/17341">Issue #17341</a>: Include the invalid name in the error messages from re about
invalid group names.</li>
<li><a class="reference external" href="http://bugs.python.org/17702">Issue #17702</a>: os.environ now raises KeyError with the original environment
variable name (str on UNIX), instead of using the encoded name (bytes on
UNIX).</li>
<li><a class="reference external" href="http://bugs.python.org/16163">Issue #16163</a>: Make the importlib based version of pkgutil.iter_importers
work for submodules. Initial patch by Berker Peksag.</li>
<li><a class="reference external" href="http://bugs.python.org/16804">Issue #16804</a>: Fix a bug in the ‘site’ module that caused running
‘python -S -m site’ to incorrectly throw an exception.</li>
<li><a class="reference external" href="http://bugs.python.org/17016">Issue #17016</a>: Get rid of possible pointer wraparounds and integer overflows
in the re module. Patch by Nickolai Zeldovich.</li>
<li><a class="reference external" href="http://bugs.python.org/16658">Issue #16658</a>: add missing return to HTTPConnection.send()
Patch by Jeff Knupp.</li>
<li><a class="reference external" href="http://bugs.python.org/14971">Issue #14971</a>: unittest test discovery no longer gets confused when a function
has a different __name__ than its name in the TestCase class dictionary.</li>
<li><a class="reference external" href="http://bugs.python.org/17678">Issue #17678</a>: Fix DeprecationWarning in the http/cookiejar.py by changing the
usage of get_origin_req_host() to origin_req_host.</li>
<li><a class="reference external" href="http://bugs.python.org/17666">Issue #17666</a>: Fix reading gzip files with an extra field.</li>
<li><a class="reference external" href="http://bugs.python.org/17502">Issue #17502</a>: Process DEFAULT values in mock side_effect that returns iterator.
Patch by Michael Foord.</li>
<li><a class="reference external" href="http://bugs.python.org/17572">Issue #17572</a>: Avoid chained exceptions while passing bad directives to
time.strptime(). Initial patch by Claudiu Popa.</li>
<li><a class="reference external" href="http://bugs.python.org/17435">Issue #17435</a>: threading.Timer’s __init__ method no longer uses mutable
default values for the args and kwargs parameters.</li>
<li><a class="reference external" href="http://bugs.python.org/17526">Issue #17526</a>: fix an IndexError raised while passing code without filename to
inspect.findsource(). Initial patch by Tyler Doyle.</li>
<li><a class="reference external" href="http://bugs.python.org/16550">Issue #16550</a>: Update the opcode descriptions of pickletools to use unsigned
integers where appropriate. Initial patch by Serhiy Storchaka.</li>
</ul>
</div>
<div class="section" id="idle">
<h3>IDLE<a class="headerlink" href="#idle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17838">Issue #17838</a>: Allow sys.stdin to be reassigned.</li>
<li><a class="reference external" href="http://bugs.python.org/13495">Issue #13495</a>: Avoid loading the color delegator twice in IDLE.</li>
<li><a class="reference external" href="http://bugs.python.org/17798">Issue #17798</a>: Allow IDLE to edit new files when specified on command line.</li>
<li><a class="reference external" href="http://bugs.python.org/14735">Issue #14735</a>: Update IDLE docs to omit “Control-z on Windows”.</li>
<li><a class="reference external" href="http://bugs.python.org/17585">Issue #17585</a>: Fixed IDLE regression. Now closes when using exit() or quit().</li>
<li><a class="reference external" href="http://bugs.python.org/17657">Issue #17657</a>: Show full Tk version in IDLE’s about dialog.
Patch by Todd Rovito.</li>
<li><a class="reference external" href="http://bugs.python.org/17613">Issue #17613</a>: Prevent traceback when removing syntax colorizer in IDLE.</li>
<li><a class="reference external" href="http://bugs.python.org/1207589">Issue #1207589</a>: Backwards-compatibility patch for right-click menu in IDLE.</li>
<li><a class="reference external" href="http://bugs.python.org/16887">Issue #16887</a>: IDLE now accepts Cancel in tabify/untabify dialog box.</li>
<li><a class="reference external" href="http://bugs.python.org/17625">Issue #17625</a>: In IDLE, close the replace dialog after it is used.</li>
<li><a class="reference external" href="http://bugs.python.org/14254">Issue #14254</a>: IDLE now handles readline correctly across shell restarts.</li>
<li><a class="reference external" href="http://bugs.python.org/17614">Issue #17614</a>: IDLE no longer raises exception when quickly closing a file.</li>
<li><a class="reference external" href="http://bugs.python.org/6698">Issue #6698</a>: IDLE now opens just an editor window when configured to do so.</li>
<li><a class="reference external" href="http://bugs.python.org/8900">Issue #8900</a>: Using keyboard shortcuts in IDLE to open a file no longer
raises an exception.</li>
<li><a class="reference external" href="http://bugs.python.org/6649">Issue #6649</a>: Fixed missing exit status in IDLE. Patch by Guilherme Polo.</li>
</ul>
</div>
<div class="section" id="tests">
<h3>Tests<a class="headerlink" href="#tests" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17833">Issue #17833</a>: Fix test_gdb failures seen on machines where debug symbols
for glibc are available (seen on PPC64 Linux).</li>
<li><a class="reference external" href="http://bugs.python.org/7855">Issue #7855</a>: Add tests for ctypes/winreg for issues found in IronPython.
Initial patch by Dino Viehland.</li>
<li><a class="reference external" href="http://bugs.python.org/17712">Issue #17712</a>: Fix test_gdb failures on Ubuntu 13.04.</li>
<li><a class="reference external" href="http://bugs.python.org/17835">Issue #17835</a>: Fix test_io when the default OS pipe buffer size is larger
than one million bytes.</li>
<li><a class="reference external" href="http://bugs.python.org/17065">Issue #17065</a>: Use process-unique key for winreg tests to avoid failures if
test is run multiple times in parallel (eg: on a buildbot host).</li>
<li><a class="reference external" href="http://bugs.python.org/12820">Issue #12820</a>: add tests for the xml.dom.minicompat module.
Patch by John Chandler and Phil Connell.</li>
<li><a class="reference external" href="http://bugs.python.org/17790">Issue #17790</a>: test_set now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17789">Issue #17789</a>: test_random now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17779">Issue #17779</a>: test_osx_env now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17766">Issue #17766</a>: test_iterlen now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17690">Issue #17690</a>: test_time now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17692">Issue #17692</a>: test_sqlite now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17843">Issue #17843</a>: Removed bz2 test data file that was triggering false-positive
virus warnings with certain antivirus software.</li>
</ul>
</div>
<div class="section" id="documentation">
<h3>Documentation<a class="headerlink" href="#documentation" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15940">Issue #15940</a>: Specify effect of locale on time functions.</li>
<li><a class="reference external" href="http://bugs.python.org/6696">Issue #6696</a>: add documentation for the Profile objects, and improve
profile/cProfile docs. Patch by Tom Pinckney.</li>
<li><a class="reference external" href="http://bugs.python.org/17915">Issue #17915</a>: Fix interoperability of xml.sax with file objects returned by
codecs.open().</li>
</ul>
</div>
<div class="section" id="build">
<h3>Build<a class="headerlink" href="#build" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17547">Issue #17547</a>: In configure, explicitly pass -Wformat for the benefit for GCC
4.8.</li>
<li><a class="reference external" href="http://bugs.python.org/17962">Issue #17962</a>: Build with OpenSSL 1.0.1e on Windows.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-1">
<h2>Python 3.3.1<a class="headerlink" href="#python-3-3-1" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 07-Apr-2013</em></p>
<div class="section" id="id1">
<h3>Build<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17550">Issue #17550</a>: Fix the –enable-profiling configure switch.</li>
</ul>
</div>
<div class="section" id="id2">
<h3>IDLE<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17625">Issue #17625</a>: In IDLE, close the replace dialog after it is used.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-1-release-candidate-1">
<h2>Python 3.3.1 release candidate 1<a class="headerlink" href="#python-3-3-1-release-candidate-1" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 24-Mar-2013</em></p>
<div class="section" id="id3">
<h3>Core and Builtins<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17328">Issue #17328</a>: Fix possible refleak in dict.setdefault.</li>
<li><a class="reference external" href="http://bugs.python.org/17223">Issue #17223</a>: Fix PyUnicode_FromUnicode() for string of 1 character outside
the range U+0000-U+10ffff.</li>
<li><a class="reference external" href="http://bugs.python.org/1692335">Issue #1692335</a>: Move initial args assignment to
BaseException.__new__ to help pickling of naive subclasses.</li>
<li><a class="reference external" href="http://bugs.python.org/17275">Issue #17275</a>: Corrected class name in init error messages of the C version of
BufferedWriter and BufferedRandom.</li>
<li><a class="reference external" href="http://bugs.python.org/7963">Issue #7963</a>: Fixed misleading error message that issued when object is
called without arguments.</li>
<li><a class="reference external" href="http://bugs.python.org/5308">Issue #5308</a>: Raise ValueError when marshalling too large object (a sequence
with size >= 2**31), instead of producing illegal marshal data.</li>
<li><a class="reference external" href="http://bugs.python.org/12983">Issue #12983</a>: Bytes literals with invalid x escape now raise a SyntaxError
and a full traceback including line number.</li>
<li><a class="reference external" href="http://bugs.python.org/17173">Issue #17173</a>: Remove uses of locale-dependent C functions (isalpha() etc.)
in the interpreter.</li>
<li><a class="reference external" href="http://bugs.python.org/17137">Issue #17137</a>: When an Unicode string is resized, the internal wide character
string (wstr) format is now cleared.</li>
<li><a class="reference external" href="http://bugs.python.org/17043">Issue #17043</a>: The unicode-internal decoder no longer read past the end of
input buffer.</li>
<li><a class="reference external" href="http://bugs.python.org/17098">Issue #17098</a>: All modules now have __loader__ set even if they pre-exist the
bootstrapping of importlib.</li>
<li><a class="reference external" href="http://bugs.python.org/16979">Issue #16979</a>: Fix error handling bugs in the unicode-escape-decode decoder.</li>
<li><a class="reference external" href="http://bugs.python.org/10156">Issue #10156</a>: In the interpreter’s initialization phase, unicode globals
are now initialized dynamically as needed.</li>
<li><a class="reference external" href="http://bugs.python.org/16980">Issue #16980</a>: Fix processing of escaped non-ascii bytes in the
unicode-escape-decode decoder.</li>
<li><a class="reference external" href="http://bugs.python.org/16975">Issue #16975</a>: Fix error handling bug in the escape-decode bytes decoder.</li>
<li><a class="reference external" href="http://bugs.python.org/14850">Issue #14850</a>: Now a charmap decoder treats U+FFFE as “undefined mapping”
in any mapping, not only in a string.</li>
<li><a class="reference external" href="http://bugs.python.org/16730">Issue #16730</a>: importlib.machinery.FileFinder now no longers raises an
exception when trying to populate its cache and it finds out the directory is
unreadable or has turned into a file. Reported and diagnosed by
David Pritchard.</li>
<li><a class="reference external" href="http://bugs.python.org/16906">Issue #16906</a>: Fix a logic error that prevented most static strings from being
cleared.</li>
<li><a class="reference external" href="http://bugs.python.org/11461">Issue #11461</a>: Fix the incremental UTF-16 decoder. Original patch by
Amaury Forgeot d’Arc.</li>
<li><a class="reference external" href="http://bugs.python.org/16856">Issue #16856</a>: Fix a segmentation fault from calling repr() on a dict with
a key whose repr raise an exception.</li>
<li><a class="reference external" href="http://bugs.python.org/16367">Issue #16367</a>: Fix FileIO.readall() on Windows for files larger than 2 GB.</li>
<li><a class="reference external" href="http://bugs.python.org/16455">Issue #16455</a>: On FreeBSD and Solaris, if the locale is C, the
ASCII/surrogateescape codec is now used, instead of the locale encoding, to
decode the command line arguments. This change fixes inconsistencies with
os.fsencode() and os.fsdecode() because these operating systems announces an
ASCII locale encoding, whereas the ISO-8859-1 encoding is used in practice.</li>
<li><a class="reference external" href="http://bugs.python.org/16761">Issue #16761</a>: Calling int() with base argument only now raises TypeError.</li>
<li><a class="reference external" href="http://bugs.python.org/16759">Issue #16759</a>: Support the full DWORD (unsigned long) range in Reg2Py
when retrieving a REG_DWORD value. This corrects functions like
winreg.QueryValueEx that may have been returning truncated values.</li>
<li><a class="reference external" href="http://bugs.python.org/14420">Issue #14420</a>: Support the full DWORD (unsigned long) range in Py2Reg
when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.</li>
<li><a class="reference external" href="http://bugs.python.org/16597">Issue #16597</a>: In buffered and text IO, call close() on the underlying stream
if invoking flush() fails.</li>
<li><a class="reference external" href="http://bugs.python.org/16722">Issue #16722</a>: In the bytes() constructor, try to call __bytes__ on the
argument before __index__.</li>
<li><a class="reference external" href="http://bugs.python.org/16602">Issue #16602</a>: When a weakref’s target was part of a long deallocation
chain, the object could remain reachable through its weakref even though
its refcount had dropped to zero.</li>
<li><a class="reference external" href="http://bugs.python.org/16416">Issue #16416</a>: On Mac OS X, operating system data are now always
encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding
(which may be ASCII if no locale environment variable is set), to avoid
inconsistencies with os.fsencode() and os.fsdecode() functions which are
already using UTF-8/surrogateescape.</li>
<li><a class="reference external" href="http://bugs.python.org/16588">Issue #16588</a>: Silence unused-but-set warnings in Python/thread_pthread</li>
<li><a class="reference external" href="http://bugs.python.org/16546">Issue #16546</a>: Fix: ast.YieldFrom argument is now mandatory.</li>
<li><a class="reference external" href="http://bugs.python.org/16514">Issue #16514</a>: Fix regression causing a traceback when sys.path[0] is None
(actually, any non-string or non-bytes type).</li>
<li><a class="reference external" href="http://bugs.python.org/16306">Issue #16306</a>: Fix multiple error messages when unknown command line
parameters where passed to the interpreter. Patch by Hieu Nguyen.</li>
<li><a class="reference external" href="http://bugs.python.org/16215">Issue #16215</a>: Fix potential double memory free in str.replace(). Patch
by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16453">Issue #16453</a>: Fix equality testing of dead weakref objects.</li>
<li><a class="reference external" href="http://bugs.python.org/9535">Issue #9535</a>: Fix pending signals that have been received but not yet
handled by Python to not persist after os.fork() in the child process.</li>
<li><a class="reference external" href="http://bugs.python.org/15001">Issue #15001</a>: fix segfault on “del sys.modules[‘__main__’]”. Patch by Victor
Stinner.</li>
<li><a class="reference external" href="http://bugs.python.org/8271">Issue #8271</a>: the utf-8 decoder now outputs the correct number of U+FFFD
characters when used with the ‘replace’ error handler on invalid utf-8
sequences. Patch by Serhiy Storchaka, tests by Ezio Melotti.</li>
<li><a class="reference external" href="http://bugs.python.org/5765">Issue #5765</a>: Apply a hard recursion limit in the compiler instead of
blowing the stack and segfaulting. Initial patch by Andrea Griffini.</li>
<li><a class="reference external" href="http://bugs.python.org/16402">Issue #16402</a>: When slicing a range, fix shadowing of exceptions from
__index__.</li>
<li><a class="reference external" href="http://bugs.python.org/16336">Issue #16336</a>: fix input checking in the surrogatepass error handler.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/8401">Issue #8401</a>: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now
raises an error.</li>
<li>Fix segfaults on setting __qualname__ on builtin types and attempting to
delete it on any type.</li>
<li><a class="reference external" href="http://bugs.python.org/16345">Issue #16345</a>: Fix an infinite loop when <tt class="docutils literal"><span class="pre">fromkeys</span></tt> on a dict subclass
received a nonempty dict from the constructor.</li>
<li><a class="reference external" href="http://bugs.python.org/16271">Issue #16271</a>: Fix strange bugs that resulted from __qualname__ appearing in a
class’s __dict__ and on type.</li>
<li><a class="reference external" href="http://bugs.python.org/6074">Issue #6074</a>: Ensure cached bytecode files can always be updated by the
user that created them, even when the source file is read-only.</li>
<li><a class="reference external" href="http://bugs.python.org/14783">Issue #14783</a>: Improve int() docstring and switch docstrings for str(),
range(), and slice() to use multi-line signatures.</li>
<li><a class="reference external" href="http://bugs.python.org/16160">Issue #16160</a>: Subclass support now works for types.SimpleNamespace.</li>
<li><a class="reference external" href="http://bugs.python.org/15379">Issue #15379</a>: Fix passing of non-BMP characters as integers for the charmap
decoder (already working as unicode strings). Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15144">Issue #15144</a>: Fix possible integer overflow when handling pointers as integer
values, by using <tt class="xref py py-obj docutils literal"><span class="pre">Py_uintptr_t</span></tt> instead of <tt class="xref py py-obj docutils literal"><span class="pre">size_t</span></tt>. Patch by Serhiy
Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15965">Issue #15965</a>: Explicitly cast <tt class="xref py py-obj docutils literal"><span class="pre">AT_FDCWD</span></tt> as (int). Required on Solaris 10
(which defines <tt class="xref py py-obj docutils literal"><span class="pre">AT_FDCWD</span></tt> as <tt class="docutils literal"><span class="pre">0xffd19553</span></tt>), harmless on other platforms.</li>
<li><a class="reference external" href="http://bugs.python.org/15839">Issue #15839</a>: Convert SystemErrors in <a class="reference internal" href="../library/functions.html#super" title="super"><tt class="xref py py-obj docutils literal"><span class="pre">super()</span></tt></a> to RuntimeErrors.</li>
<li><a class="reference external" href="http://bugs.python.org/15846">Issue #15846</a>: Fix SystemError which happened when using <a class="reference internal" href="../library/ast.html#ast.parse" title="ast.parse"><tt class="xref py py-obj docutils literal"><span class="pre">ast.parse()</span></tt></a> in an
exception handler on code with syntax errors.</li>
<li><a class="reference external" href="http://bugs.python.org/15801">Issue #15801</a>: Make sure mappings passed to ‘%’ formatting are actually
subscriptable.</li>
<li><a class="reference external" href="http://bugs.python.org/15111">Issue #15111</a>: __import__ should let ImportError propagate when a module that
is imported as a side-effect of using fromlist tries to import a module
that cannot be found.</li>
</ul>
</div>
<div class="section" id="id4">
<h3>Library<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17540">Issue #17540</a>: Added style to formatter configuration by dict.</li>
<li><a class="reference external" href="http://bugs.python.org/17536">Issue #17536</a>: Add to webbrowser’s browser list: www-browser, x-www-browser,
iceweasel, iceape.</li>
<li><a class="reference external" href="http://bugs.python.org/17488">Issue #17488</a>: Change the subprocess.Popen bufsize parameter default value
from unbuffered (0) to buffering (-1) to match the behavior existing code
expects and match the behavior of the subprocess module in Python 2 to avoid
introducing hard to track down bugs.</li>
<li><a class="reference external" href="http://bugs.python.org/17521">Issue #17521</a>: Corrected non-enabling of logger following two calls to
fileConfig().</li>
<li><a class="reference external" href="http://bugs.python.org/17508">Issue #17508</a>: Corrected MemoryHandler configuration in dictConfig() where
the target handler wasn’t configured first.</li>
<li><a class="reference external" href="http://bugs.python.org/17209">Issue #17209</a>: curses.window.get_wch() now handles correctly KeyboardInterrupt
(CTRL+c).</li>
<li><a class="reference external" href="http://bugs.python.org/5713">Issue #5713</a>: smtplib now handles 421 (closing connection) error codes when
sending mail by closing the socket and reporting the 421 error code via the
exception appropriate to the command that received the error response.</li>
<li><a class="reference external" href="http://bugs.python.org/17192">Issue #17192</a>: Update the ctypes module’s libffi to v3.0.13. This
specifically addresses a stack misalignment issue on x86 and issues on
some more recent platforms.</li>
<li><a class="reference external" href="http://bugs.python.org/8862">Issue #8862</a>: Fixed curses cleanup when getkey is interrputed by a signal.</li>
<li><a class="reference external" href="http://bugs.python.org/17443">Issue #17443</a>: imaplib.IMAP4_stream was using the default unbuffered IO
in subprocess, but the imap code assumes buffered IO. In Python2 this
worked by accident. IMAP4_stream now explicitly uses buffered IO.</li>
<li><a class="reference external" href="http://bugs.python.org/17476">Issue #17476</a>: Fixed regression relative to Python2 in undocumented pydoc
‘allmethods’; it was missing unbound methods on the class.</li>
<li><a class="reference external" href="http://bugs.python.org/16880">Issue #16880</a>: Do not assume _imp.load_dynamic() is defined in the imp module.</li>
<li><a class="reference external" href="http://bugs.python.org/16389">Issue #16389</a>: Fixed a performance regression relative to Python 3.1 in the
caching of compiled regular expressions.</li>
<li><a class="reference external" href="http://bugs.python.org/17431">Issue #17431</a>: Fix missing import of BytesFeedParser in email.parser.</li>
<li><a class="reference external" href="http://bugs.python.org/1285086">Issue #1285086</a>: Get rid of the refcounting hack and speed up
urllib.parse.unquote() and urllib.parse.unquote_to_bytes().</li>
<li><a class="reference external" href="http://bugs.python.org/17368">Issue #17368</a>: Fix an off-by-one error in the Python JSON decoder that caused
a failure while decoding empty object literals when object_pairs_hook was
specified.</li>
<li><a class="reference external" href="http://bugs.python.org/14645">Issue #14645</a>: The email generator classes now produce output using the
specified linesep throughout. Previously if the prolog, epilog, or
body were stored with a different linesep, that linesep was used. This
fix corrects an RFC non-compliance issue with smtplib.send_message.</li>
<li><a class="reference external" href="http://bugs.python.org/17278">Issue #17278</a>: Fix a crash in heapq.heappush() and heapq.heappop() when
the list is being resized concurrently.</li>
<li><a class="reference external" href="http://bugs.python.org/16962">Issue #16962</a>: Use getdents64 instead of the obsolete getdents syscall
in the subprocess module on Linux.</li>
<li><a class="reference external" href="http://bugs.python.org/17018">Issue #17018</a>: Make Process.join() retry if os.waitpid() fails with EINTR.</li>
<li><a class="reference external" href="http://bugs.python.org/17223">Issue #17223</a>: array module: Fix a crasher when converting an array containing
invalid characters (outside range [U+0000; U+10ffff]) to Unicode:
repr(array), str(array) and array.tounicode(). Patch written by Manuel Jacob.</li>
<li><a class="reference external" href="http://bugs.python.org/14720">Issue #14720</a>: sqlite3: Convert datetime microseconds correctly.
Patch by Lowe Thiderman.</li>
<li><a class="reference external" href="http://bugs.python.org/17225">Issue #17225</a>: JSON decoder now counts columns in the first line starting
with 1, as in other lines.</li>
<li><a class="reference external" href="http://bugs.python.org/13700">Issue #13700</a>: Fix byte/string handling in imaplib authentication when an
authobject is specified.</li>
<li><a class="reference external" href="http://bugs.python.org/13153">Issue #13153</a>: Tkinter functions now raise TclError instead of ValueError when
a string argument contains non-BMP character.</li>
<li><a class="reference external" href="http://bugs.python.org/9669">Issue #9669</a>: Protect re against infinite loops on zero-width matching in
non-greedy repeat. Patch by Matthew Barnett.</li>
<li><a class="reference external" href="http://bugs.python.org/13169">Issue #13169</a>: The maximal repetition number in a regular expression has been
increased from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on
64-bit).</li>
<li><a class="reference external" href="http://bugs.python.org/17143">Issue #17143</a>: Fix a missing import in the trace module. Initial patch by
Berker Peksag.</li>
<li><a class="reference external" href="http://bugs.python.org/16743">Issue #16743</a>: Fix mmap overflow check on 32 bit Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/16800">Issue #16800</a>: tempfile.gettempdir() no longer left temporary files when
the disk is full. Original patch by Amir Szekely.</li>
<li><a class="reference external" href="http://bugs.python.org/16564">Issue #16564</a>: Fixed regression relative to Python2 in the operation of
email.encoders.encode_7or8bit when used with binary data.</li>
<li><a class="reference external" href="http://bugs.python.org/17052">Issue #17052</a>: unittest discovery should use self.testLoader.</li>
<li><a class="reference external" href="http://bugs.python.org/4591">Issue #4591</a>: Uid and gid values larger than 2**31 are supported now.</li>
<li><a class="reference external" href="http://bugs.python.org/17141">Issue #17141</a>: random.vonmisesvariate() no more hangs for large kappas.</li>
<li><a class="reference external" href="http://bugs.python.org/17149">Issue #17149</a>: Fix random.vonmisesvariate to always return results in
[0, 2*math.pi].</li>
<li><a class="reference external" href="http://bugs.python.org/1470548">Issue #1470548</a>: XMLGenerator now works with binary output streams.</li>
<li><a class="reference external" href="http://bugs.python.org/6975">Issue #6975</a>: os.path.realpath() now correctly resolves multiple nested
symlinks on POSIX platforms.</li>
<li><a class="reference external" href="http://bugs.python.org/16564">Issue #16564</a>: Fixed regression relative to Python2 in the operation of
email.encoders.encode_noop when used with binary data.</li>
<li><a class="reference external" href="http://bugs.python.org/10355">Issue #10355</a>: In SpooledTemporaryFile class mode, name, encoding and
newlines properties now work for unrolled files. Obsoleted and never
working on Python 3 xreadline method now removed.</li>
<li><a class="reference external" href="http://bugs.python.org/16686">Issue #16686</a>: Fixed a lot of bugs in audioop module. Fixed crashes in
avgpp(), maxpp() and ratecv(). Fixed an integer overflow in add(), bias(),
and ratecv(). reverse(), lin2lin() and ratecv() no more lose precision for
32-bit samples. max() and rms() no more returns a negative result and
various other functions now work correctly with 32-bit sample -0x80000000.</li>
<li><a class="reference external" href="http://bugs.python.org/17073">Issue #17073</a>: Fix some integer overflows in sqlite3 module.</li>
<li><a class="reference external" href="http://bugs.python.org/16723">Issue #16723</a>: httplib.HTTPResponse no longer marked closed when the connection
is automatically closed.</li>
<li><a class="reference external" href="http://bugs.python.org/16948">Issue #16948</a>: Fix quoted printable body encoding for non-latin1 character
sets in the email package.</li>
<li><a class="reference external" href="http://bugs.python.org/16811">Issue #16811</a>: Fix folding of headers with no value in the provisional email
policies.</li>
<li><a class="reference external" href="http://bugs.python.org/17132">Issue #17132</a>: Update symbol for “yield from” grammar changes.</li>
<li><a class="reference external" href="http://bugs.python.org/17076">Issue #17076</a>: Make copying of xattrs more permissive of missing FS support.
Patch by Thomas Wouters.</li>
<li><a class="reference external" href="http://bugs.python.org/17089">Issue #17089</a>: Expat parser now correctly works with string input not only when
an internal XML encoding is UTF-8 or US-ASCII. It now accepts bytes and
strings larger than 2 GiB.</li>
<li><a class="reference external" href="http://bugs.python.org/6083">Issue #6083</a>: Fix multiple segmentation faults occured when PyArg_ParseTuple
parses nested mutating sequence.</li>
<li><a class="reference external" href="http://bugs.python.org/5289">Issue #5289</a>: Fix ctypes.util.find_library on Solaris.</li>
<li><a class="reference external" href="http://bugs.python.org/17106">Issue #17106</a>: Fix a segmentation fault in io.TextIOWrapper when an underlying
stream or a decoder produces data of an unexpected type (i.e. when
io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec).</li>
<li><a class="reference external" href="http://bugs.python.org/15633">Issue #15633</a>: httplib.HTTPResponse is now mark closed when the server
sends less than the advertised Content-Length.</li>
<li><a class="reference external" href="http://bugs.python.org/12268">Issue #12268</a>: The io module file object write methods no longer abort early
when one of its write system calls is interrupted (EINTR).</li>
<li><a class="reference external" href="http://bugs.python.org/6972">Issue #6972</a>: The zipfile module no longer overwrites files outside of
its destination path when extracting malicious zip files.</li>
<li><a class="reference external" href="http://bugs.python.org/4844">Issue #4844</a>: ZipFile now raises BadZipFile when opens a ZIP file with an
incomplete “End of Central Directory” record. Original patch by Guilherme
Polo and Alan McIntyre.</li>
<li><a class="reference external" href="http://bugs.python.org/17071">Issue #17071</a>: Signature.bind() now works when one of the keyword arguments
is named <tt class="docutils literal"><span class="pre">self</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/12004">Issue #12004</a>: Fix an internal error in PyZipFile when writing an invalid
Python file. Patch by Ben Morgan.</li>
<li><a class="reference external" href="http://bugs.python.org/1602133">Issue #1602133</a>: on Mac OS X a shared library build (<tt class="docutils literal"><span class="pre">--enable-shared</span></tt>)
now fills the <tt class="docutils literal"><span class="pre">os.environ</span></tt> variable correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/15505">Issue #15505</a>: <a class="reference internal" href="../library/unittest.html#unittest.installHandler" title="unittest.installHandler"><tt class="xref py py-obj docutils literal"><span class="pre">unittest.installHandler</span></tt></a> no longer assumes SIGINT handler is
set to a callable object.</li>
<li><a class="reference external" href="http://bugs.python.org/13454">Issue #13454</a>: Fix a crash when deleting an iterator created by itertools.tee()
if all other iterators were very advanced before.</li>
<li><a class="reference external" href="http://bugs.python.org/12411">Issue #12411</a>: Fix to cgi.parse_multipart to correctly use bytes boundaries
and bytes data. Patch by Jonas Wagner.</li>
<li><a class="reference external" href="http://bugs.python.org/16957">Issue #16957</a>: shutil.which() no longer searches a bare file name in the
current directory on Unix and no longer searches a relative file path with
a directory part in PATH directories. Patch by Thomas Kluyver.</li>
<li><a class="reference external" href="http://bugs.python.org/16993">Issue #16993</a>: shutil.which() now preserves the case of the path and extension
on Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/16992">Issue #16992</a>: On Windows in signal.set_wakeup_fd, validate the file
descriptor argument.</li>
<li><a class="reference external" href="http://bugs.python.org/16422">Issue #16422</a>: For compatibility with the Python version, the C version of
decimal now uses strings instead of integers for rounding mode constants.</li>
<li><a class="reference external" href="http://bugs.python.org/15861">Issue #15861</a>: tkinter now correctly works with lists and tuples containing
strings with whitespaces, backslashes or unbalanced braces.</li>
<li><a class="reference external" href="http://bugs.python.org/10527">Issue #10527</a>: Use poll() instead of select() for multiprocessing pipes.</li>
<li><a class="reference external" href="http://bugs.python.org/9720">Issue #9720</a>: zipfile now writes correct local headers for files larger than
4 GiB.</li>
<li><a class="reference external" href="http://bugs.python.org/16955">Issue #16955</a>: Fix the poll() method for multiprocessing’s socket
connections on Windows.</li>
<li>SSLContext.load_dh_params() now properly closes the input file.</li>
<li><a class="reference external" href="http://bugs.python.org/16900">Issue #16900</a>: Issue a ResourceWarning when an ssl socket is left unclosed.</li>
<li><a class="reference external" href="http://bugs.python.org/13899">Issue #13899</a>: A, Z, and B now correctly match the A, Z, and B literals
when used inside character classes (e.g. ‘[A]’). Patch by Matthew Barnett.</li>
<li><a class="reference external" href="http://bugs.python.org/15545">Issue #15545</a>: Fix regression in sqlite3’s iterdump method where it was
failing if the connection used a row factory (such as sqlite3.Row) that
produced unsortable objects. (Regression was introduced by fix for 9750).</li>
<li><a class="reference external" href="http://bugs.python.org/15972">Issue #15972</a>: Fix error messages when os functions expecting a file name or
file descriptor receive the incorrect type.</li>
<li><a class="reference external" href="http://bugs.python.org/16828">Issue #16828</a>: Fix error incorrectly raised by bz2.compress(b’‘) and
bz2.BZ2Compressor.compress(b’‘). Initial patch by Martin Packman.</li>
<li><a class="reference external" href="http://bugs.python.org/16541">Issue #16541</a>: tk_setPalette() now works with keyword arguments.</li>
<li><a class="reference external" href="http://bugs.python.org/16820">Issue #16820</a>: In configparser, <tt class="xref py py-obj docutils literal"><span class="pre">parser.popitem()</span></tt> no longer raises ValueError.
This makes <tt class="xref py py-obj docutils literal"><span class="pre">parser.clean()</span></tt> work correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/16820">Issue #16820</a>: In configparser, <tt class="docutils literal"><span class="pre">parser['section']</span> <span class="pre">=</span> <span class="pre">{}</span></tt> now preserves
section order within the parser. This makes <tt class="xref py py-obj docutils literal"><span class="pre">parser.update()</span></tt> preserve section
order as well.</li>
<li><a class="reference external" href="http://bugs.python.org/16820">Issue #16820</a>: In configparser, <tt class="docutils literal"><span class="pre">parser['DEFAULT']</span> <span class="pre">=</span> <span class="pre">{}</span></tt> now correctly
clears previous values stored in the default section. Same goes for
<tt class="docutils literal"><span class="pre">parser.update({'DEFAULT':</span> <span class="pre">{}})</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/9586">Issue #9586</a>: Redefine SEM_FAILED on MacOSX to keep compiler happy.</li>
<li><a class="reference external" href="http://bugs.python.org/10527">Issue #10527</a>: make multiprocessing use poll() instead of select() if available.</li>
<li><a class="reference external" href="http://bugs.python.org/16688">Issue #16688</a>: Now regexes contained backreferences correctly work with
non-ASCII strings. Patch by Matthew Barnett.</li>
<li><a class="reference external" href="http://bugs.python.org/16485">Issue #16485</a>: Now file descriptors are closed if file header patching failed
on closing an aifc file.</li>
<li><a class="reference external" href="http://bugs.python.org/16165">Issue #16165</a>: sched.scheduler.run() no longer blocks a scheduler for other
threads.</li>
<li><a class="reference external" href="http://bugs.python.org/16641">Issue #16641</a>: Default values of sched.scheduler.enter() are no longer
modifiable.</li>
<li><a class="reference external" href="http://bugs.python.org/16618">Issue #16618</a>: Make glob.glob match consistently across strings and bytes
regarding leading dots. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16713">Issue #16713</a>: Parsing of ‘tel’ urls using urlparse separates params from
path.</li>
<li><a class="reference external" href="http://bugs.python.org/16443">Issue #16443</a>: Add docstrings to regular expression match objects.
Patch by Anton Kasyanov.</li>
<li><a class="reference external" href="http://bugs.python.org/15701">Issue #15701</a>: Fix HTTPError info method call to return the headers information.</li>
<li><a class="reference external" href="http://bugs.python.org/16752">Issue #16752</a>: Add a missing import to modulefinder. Patch by Berker Peksag.</li>
<li><a class="reference external" href="http://bugs.python.org/16646">Issue #16646</a>: ftplib.FTP.makeport() might lose socket error details.
(patch by Serhiy Storchaka)</li>
<li><a class="reference external" href="http://bugs.python.org/16626">Issue #16626</a>: Fix infinite recursion in glob.glob() on Windows when the
pattern contains a wildcard in the drive or UNC path. Patch by Serhiy
Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15783">Issue #15783</a>: Except for the number methods, the C version of decimal now
supports all None default values present in decimal.py. These values were
largely undocumented.</li>
<li><a class="reference external" href="http://bugs.python.org/16298">Issue #16298</a>: In HTTPResponse.read(), close the socket when there is no
Content-Length and the incoming stream is finished. Patch by Eran
Rundstein.</li>
<li><a class="reference external" href="http://bugs.python.org/15872">Issue #15872</a>: Fix 3.3 regression introduced by the new fd-based shutil.rmtree
that caused it to not ignore certain errors when ignore_errors was set.
Patch by Alessandro Moura and Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16248">Issue #16248</a>: Disable code execution from the user’s home directory by
tkinter when the -E flag is passed to Python. Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16628">Issue #16628</a>: Fix a memory leak in ctypes.resize().</li>
<li><a class="reference external" href="http://bugs.python.org/13614">Issue #13614</a>: Fix setup.py register failure with invalid rst in description.
Patch by Julien Courteau and Pierre Paul Lefebvre.</li>
<li><a class="reference external" href="http://bugs.python.org/13512">Issue #13512</a>: Create ~/.pypirc securely (CVE-2011-4944). Initial patch by
Philip Jenvey, tested by Mageia and Debian.</li>
<li><a class="reference external" href="http://bugs.python.org/7719">Issue #7719</a>: Make distutils ignore <tt class="docutils literal"><span class="pre">.nfs*</span></tt> files instead of choking later
on. Initial patch by SilentGhost and Jeff Ramnani.</li>
<li><a class="reference external" href="http://bugs.python.org/13120">Issue #13120</a>: Allow to call pdb.set_trace() from thread.
Patch by Ilya Sandler.</li>
<li><a class="reference external" href="http://bugs.python.org/16585">Issue #16585</a>: Make CJK encoders support error handlers that return bytes per
PEP 383.</li>
<li><a class="reference external" href="http://bugs.python.org/10182">Issue #10182</a>: The re module doesn’t truncate indices to 32 bits anymore.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16573">Issue #16573</a>: In 2to3, treat enumerate() like a consuming call, so superfluous
list() calls aren’t added to filter(), map(), and zip() which are directly
passed enumerate().</li>
<li><a class="reference external" href="http://bugs.python.org/12848">Issue #12848</a>: The pure Python pickle implementation now treats object
lengths as unsigned 32-bit integers, like the C implementation does.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16408">Issue #16408</a>: Fix file descriptors not being closed in error conditions
in the zipfile module. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16481">Issue #16481</a>: multiprocessing no longer leaks process handles on Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/16140">Issue #16140</a>: The subprocess module no longer double closes its child
subprocess.PIPE parent file descriptors on child error prior to exec().</li>
<li>Remove a bare print to stdout from the subprocess module that could have
happened if the child process wrote garbage to its pre-exec error pipe.</li>
<li><a class="reference external" href="http://bugs.python.org/16327">Issue #16327</a>: The subprocess module no longer leaks file descriptors
used for stdin/stdout/stderr pipes to the child when fork() fails.</li>
<li><a class="reference external" href="http://bugs.python.org/14396">Issue #14396</a>: Handle the odd rare case of waitpid returning 0 when not
expected in subprocess.Popen.wait().</li>
<li><a class="reference external" href="http://bugs.python.org/16411">Issue #16411</a>: Fix a bug where zlib.decompressobj().flush() might try to access
previously-freed memory. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16357">Issue #16357</a>: fix calling accept() on a SSLSocket created through
SSLContext.wrap_socket(). Original patch by Jeff McNeil.</li>
<li><a class="reference external" href="http://bugs.python.org/16409">Issue #16409</a>: The reporthook callback made by the legacy
urllib.request.urlretrieve API now properly supplies a constant non-zero
block_size as it did in Python 3.2 and 2.7. This matches the behavior of
urllib.request.URLopener.retrieve.</li>
<li><a class="reference external" href="http://bugs.python.org/16431">Issue #16431</a>: Use the type information when constructing a Decimal subtype
from a Decimal argument.</li>
<li><a class="reference external" href="http://bugs.python.org/16350">Issue #16350</a>: zlib.decompressobj().decompress() now accumulates data from
successive calls after EOF in unused_data, instead of only saving the argument
to the last call. decompressobj().flush() now correctly sets unused_data and
unconsumed_tail. A bug in the handling of MemoryError when setting the
unconsumed_tail attribute has also been fixed. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/12759">Issue #12759</a>: sre_parse now raises a proper error when the name of the group
is missing. Initial patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16152">Issue #16152</a>: fix tokenize to ignore whitespace at the end of the code when
no newline is found. Patch by Ned Batchelder.</li>
<li><a class="reference external" href="http://bugs.python.org/16230">Issue #16230</a>: Fix a crash in select.select() when one the lists changes
size while iterated on. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16228">Issue #16228</a>: Fix a crash in the json module where a list changes size
while it is being encoded. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/14897">Issue #14897</a>: Enhance error messages of struct.pack and
struct.pack_into. Patch by Matti Mäki.</li>
<li><a class="reference external" href="http://bugs.python.org/12890">Issue #12890</a>: cgitb no longer prints spurious <p> tags in text
mode when the logdir option is specified.</li>
<li><a class="reference external" href="http://bugs.python.org/16307">Issue #16307</a>: Fix multiprocessing.Pool.map_async not calling its callbacks.
Patch by Janne Karila.</li>
<li><a class="reference external" href="http://bugs.python.org/16250">Issue #16250</a>: Fix URLError invocation with proper args.</li>
<li><a class="reference external" href="http://bugs.python.org/16116">Issue #16116</a>: Fix include and library paths to be correct when building C
extensions in venvs.</li>
<li><a class="reference external" href="http://bugs.python.org/16245">Issue #16245</a>: Fix the value of a few entities in html.entities.html5.</li>
<li><a class="reference external" href="http://bugs.python.org/14398">Issue #14398</a>: Fix size truncation and overflow bugs in the bz2 module.</li>
<li><a class="reference external" href="http://bugs.python.org/16220">Issue #16220</a>: wsgiref now always calls close() on an iterable response.
Patch by Brent Tubbs.</li>
<li><a class="reference external" href="http://bugs.python.org/16270">Issue #16270</a>: urllib may hang when used for retrieving files via FTP by using
a context manager. Patch by Giampaolo Rodola’.</li>
<li><a class="reference external" href="http://bugs.python.org/16461">Issue #16461</a>: Wave library should be able to deal with 4GB wav files,
and sample rate of 44100 Hz.</li>
<li><a class="reference external" href="http://bugs.python.org/16176">Issue #16176</a>: Properly identify Windows 8 via platform.platform()</li>
<li><a class="reference external" href="http://bugs.python.org/16114">Issue #16114</a>: The subprocess module no longer provides a misleading error
message stating that args[0] did not exist when either the cwd or executable
keyword arguments specified a path that did not exist.</li>
<li><a class="reference external" href="http://bugs.python.org/16169">Issue #16169</a>: Fix ctypes.WinError()’s confusion between errno and winerror.</li>
<li><a class="reference external" href="http://bugs.python.org/16076">Issue #16076</a>: Made _elementtree.Element pickleable in a way that is compatible
with the Python Element. Pickling/unpickling of xml.etree.ElementTree.Element
works again - this was a temporary regression from 3.2 where the by-default
imported _elementtree had no pickling capability.</li>
<li><a class="reference external" href="http://bugs.python.org/16089">Issue #16089</a>: Allow ElementTree.TreeBuilder to work again with a non-Element
element_factory (fixes a regression in SimpleTAL).</li>
<li><a class="reference external" href="http://bugs.python.org/16913">Issue #16913</a>: Fix Element.itertext()’s handling of text with XML entities.,</li>
<li><a class="reference external" href="http://bugs.python.org/16034">Issue #16034</a>: Fix performance regressions in the new <a class="reference internal" href="../library/bz2.html#bz2.BZ2File" title="bz2.BZ2File"><tt class="xref py py-obj docutils literal"><span class="pre">bz2.BZ2File</span></tt></a>
implementation. Initial patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16112">Issue #16112</a>: platform.architecture does not correctly escape argument to
/usr/bin/file. Patch by David Benjamin.</li>
<li><a class="reference external" href="http://bugs.python.org/15756">Issue #15756</a>: <tt class="xref py py-obj docutils literal"><span class="pre">subprocess.poll()</span></tt> now properly handles <a class="reference internal" href="../library/errno.html#errno.ECHILD" title="errno.ECHILD"><tt class="xref py py-obj docutils literal"><span class="pre">errno.ECHILD</span></tt></a> to
return a returncode of 0 when the child has already exited or cannot be waited
on.</li>
<li><a class="reference external" href="http://bugs.python.org/15323">Issue #15323</a>: Improve failure message of <tt class="xref py py-obj docutils literal"><span class="pre">Mock.assert_called_once_with()</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/16064">Issue #16064</a>: <tt class="docutils literal"><span class="pre">unittest</span> <span class="pre">-m</span></tt> claims executable is “python”, not “python3”.</li>
<li><a class="reference external" href="http://bugs.python.org/12376">Issue #12376</a>: Pass on parameters in <tt class="xref py py-obj docutils literal"><span class="pre">TextTestResult.__init__()</span></tt> super call.</li>
<li><a class="reference external" href="http://bugs.python.org/15222">Issue #15222</a>: Insert blank line after each message in mbox mailboxes.</li>
<li><a class="reference external" href="http://bugs.python.org/16013">Issue #16013</a>: Fix <tt class="xref py py-obj docutils literal"><span class="pre">csv.Reader</span></tt> parsing issue with ending quote characters.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15421">Issue #15421</a>: Fix an OverflowError in <tt class="xref py py-obj docutils literal"><span class="pre">Calendar.itermonthdates()</span></tt> after
<a class="reference internal" href="../library/datetime.html#datetime.MAXYEAR" title="datetime.MAXYEAR"><tt class="xref py py-obj docutils literal"><span class="pre">datetime.MAXYEAR</span></tt></a>. Patch by Cédric Krier.</li>
<li><a class="reference external" href="http://bugs.python.org/15970">Issue #15970</a>: <a class="reference internal" href="../library/xml.etree.elementtree.html#module-xml.etree.ElementTree" title="xml.etree.ElementTree: Implementation of the ElementTree API."><tt class="xref py py-obj docutils literal"><span class="pre">xml.etree.ElementTree</span></tt></a> now serializes correctly the empty HTML
elements ‘meta’ and ‘param’.</li>
<li><a class="reference external" href="http://bugs.python.org/15842">Issue #15842</a>: The <tt class="xref py py-obj docutils literal"><span class="pre">SocketIO.{readable,writable,seekable}</span></tt> methods now raise
ValueError when the file-like object is closed. Patch by Alessandro Moura.</li>
<li><a class="reference external" href="http://bugs.python.org/15876">Issue #15876</a>: Fix a refleak in the <a class="reference internal" href="../library/curses.html#module-curses" title="curses: An interface to the curses library, providing portable terminal handling. (Unix)"><tt class="xref py py-obj docutils literal"><span class="pre">curses</span></tt></a> module: window.encoding.</li>
<li><a class="reference external" href="http://bugs.python.org/15881">Issue #15881</a>: Fix <a class="reference internal" href="../library/atexit.html#module-atexit" title="atexit: Register and execute cleanup functions."><tt class="xref py py-obj docutils literal"><span class="pre">atexit</span></tt></a> hook in <a class="reference internal" href="../library/multiprocessing.html#module-multiprocessing" title="multiprocessing: Process-based parallelism."><tt class="xref py py-obj docutils literal"><span class="pre">multiprocessing</span></tt></a>. Original patch by Chris
McDonough.</li>
<li><a class="reference external" href="http://bugs.python.org/15841">Issue #15841</a>: The readable(), writable() and seekable() methods of
<a class="reference internal" href="../library/io.html#io.BytesIO" title="io.BytesIO"><tt class="xref py py-obj docutils literal"><span class="pre">io.BytesIO</span></tt></a> and <a class="reference internal" href="../library/io.html#io.StringIO" title="io.StringIO"><tt class="xref py py-obj docutils literal"><span class="pre">io.StringIO</span></tt></a> objects now raise ValueError when the object
has been closed. Patch by Alessandro Moura.</li>
<li><a class="reference external" href="http://bugs.python.org/15447">Issue #15447</a>: Use <a class="reference internal" href="../library/subprocess.html#subprocess.DEVNULL" title="subprocess.DEVNULL"><tt class="xref py py-obj docutils literal"><span class="pre">subprocess.DEVNULL</span></tt></a> in webbrowser, instead of opening
<a class="reference internal" href="../library/os.html#os.devnull" title="os.devnull"><tt class="xref py py-obj docutils literal"><span class="pre">os.devnull</span></tt></a> explicitly and leaving it open.</li>
<li><a class="reference external" href="http://bugs.python.org/15509">Issue #15509</a>: <tt class="xref py py-obj docutils literal"><span class="pre">webbrowser.UnixBrowser</span></tt> no longer passes empty arguments to
Popen when <tt class="docutils literal"><span class="pre">%action</span></tt> substitutions produce empty strings.</li>
<li><a class="reference external" href="http://bugs.python.org/12776">Issue #12776</a>, <a class="reference external" href="http://bugs.python.org/11839">issue #11839</a>: Call <a class="reference internal" href="../library/argparse.html#module-argparse" title="argparse: Command-line option and argument parsing library."><tt class="xref py py-obj docutils literal"><span class="pre">argparse</span></tt></a> type function (specified by
add_argument) only once. Before, the type function was called twice in the
case where the default was specified and the argument was given as well. This
was especially problematic for the FileType type, as a default file would
always be opened, even if a file argument was specified on the command line.</li>
<li><a class="reference external" href="http://bugs.python.org/15906">Issue #15906</a>: Fix a regression in <a class="reference internal" href="../library/argparse.html#module-argparse" title="argparse: Command-line option and argument parsing library."><tt class="xref py py-obj docutils literal"><span class="pre">argparse</span></tt></a> caused by the preceding change,
when <tt class="docutils literal"><span class="pre">action='append'</span></tt>, <tt class="docutils literal"><span class="pre">type='str'</span></tt> and <tt class="docutils literal"><span class="pre">default=[]</span></tt>.</li>
</ul>
</div>
<div class="section" id="id5">
<h3>IDLE<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17114">Issue #17114</a>: IDLE now uses non-strict config parser.</li>
<li><a class="reference external" href="http://bugs.python.org/9290">Issue #9290</a>: In IDLE the sys.std* streams now implement io.TextIOBase
interface and support all mandatory methods and properties.</li>
<li><a class="reference external" href="http://bugs.python.org/16829">Issue #16829</a>: IDLE printing no longer fails if there are spaces or other
special characters in the file path.</li>
<li><a class="reference external" href="http://bugs.python.org/16491">Issue #16491</a>: IDLE now prints chained exception tracebacks.</li>
<li><a class="reference external" href="http://bugs.python.org/16819">Issue #16819</a>: IDLE method completion now correctly works for bytes literals.</li>
<li><a class="reference external" href="http://bugs.python.org/16504">Issue #16504</a>: IDLE now catches SyntaxErrors raised by tokenizer. Patch by
Roger Serwy.</li>
<li><a class="reference external" href="http://bugs.python.org/16511">Issue #16511</a>: Use default IDLE width and height if config param is not valid.
Patch Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/1207589">Issue #1207589</a>: Add Cut/Copy/Paste items to IDLE right click Context Menu
Patch by Todd Rovito.</li>
</ul>
</div>
<div class="section" id="id6">
<h3>Tests<a class="headerlink" href="#id6" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17448">Issue #17448</a>: test_sax now skips if there are no xml parsers available
instead of raising an ImportError.</li>
<li><a class="reference external" href="http://bugs.python.org/11420">Issue #11420</a>: make test suite pass with -B/DONTWRITEBYTECODE set.
Initial patch by Thomas Wouters.</li>
<li><a class="reference external" href="http://bugs.python.org/10652">Issue #10652</a>: make tcl/tk tests run after __all__ test, patch by
Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/11963">Issue #11963</a>: remove human verification from test_parser and test_subprocess.</li>
<li><a class="reference external" href="http://bugs.python.org/11732">Issue #11732</a>: add a new suppress_crash_popup() context manager to test.support
that disables crash popups on Windows and use it in test_faulthandler and
test_capi.</li>
<li><a class="reference external" href="http://bugs.python.org/13898">Issue #13898</a>: test_ssl no longer prints a spurious stack trace on Ubuntu.</li>
<li><a class="reference external" href="http://bugs.python.org/17249">Issue #17249</a>: convert a test in test_capi to use unittest and reap threads.</li>
<li><a class="reference external" href="http://bugs.python.org/17041">Issue #17041</a>: Fix testing when Python is configured with the
–without-doc-strings.</li>
<li><a class="reference external" href="http://bugs.python.org/16923">Issue #16923</a>: Fix ResourceWarnings in test_ssl.</li>
<li><a class="reference external" href="http://bugs.python.org/15539">Issue #15539</a>: Added regression tests for Tools/scripts/pindent.py.</li>
<li><a class="reference external" href="http://bugs.python.org/17479">Issue #17479</a>: test_io now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17066">Issue #17066</a>: test_robotparser now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17334">Issue #17334</a>: test_index now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17333">Issue #17333</a>: test_imaplib now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17082">Issue #17082</a>: test_dbm* now work with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17079">Issue #17079</a>: test_ctypes now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17304">Issue #17304</a>: test_hash now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17303">Issue #17303</a>: test_future* now work with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/17163">Issue #17163</a>: test_file now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16925">Issue #16925</a>: test_configparser now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16918">Issue #16918</a>: test_codecs now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16919">Issue #16919</a>: test_crypt now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16910">Issue #16910</a>: test_bytes, test_unicode, and test_userstring now work with
unittest test discovery. Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16905">Issue #16905</a>: test_warnings now works with unittest test discovery.
Initial patch by Berker Peksag.</li>
<li><a class="reference external" href="http://bugs.python.org/16898">Issue #16898</a>: test_bufio now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16888">Issue #16888</a>: test_array now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16896">Issue #16896</a>: test_asyncore now works with unittest test discovery.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16897">Issue #16897</a>: test_bisect now works with unittest test discovery.
Initial patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16852">Issue #16852</a>: test_genericpath, test_posixpath, test_ntpath, and test_macpath
now work with unittest test discovery. Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/16748">Issue #16748</a>: test_heapq now works with unittest test discovery.</li>
<li><a class="reference external" href="http://bugs.python.org/15324">Issue #15324</a>: Fix regrtest parsing of –fromfile, –match, and –randomize
options.</li>
<li><a class="reference external" href="http://bugs.python.org/16702">Issue #16702</a>: test_urllib2_localnet tests now correctly ignores proxies for
localhost tests.</li>
<li><a class="reference external" href="http://bugs.python.org/16664">Issue #16664</a>: Add regression tests for glob’s behaviour concerning entries
starting with a ”.”. Patch by Sebastian Kreft.</li>
<li><a class="reference external" href="http://bugs.python.org/16559">Issue #16559</a>: Add more tests for the json module, including some from the
official test suite at json.org. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16661">Issue #16661</a>: Fix the <a class="reference internal" href="../library/os.html#os.getgrouplist" title="os.getgrouplist"><tt class="xref py py-obj docutils literal"><span class="pre">os.getgrouplist()</span></tt></a> test by not assuming that it gives
the same output as <strong class="command">id -G</strong>.</li>
<li><a class="reference external" href="http://bugs.python.org/16115">Issue #16115</a>: Add some tests for the executable argument to
subprocess.Popen(). Initial patch by Kushal Das.</li>
<li><a class="reference external" href="http://bugs.python.org/16126">Issue #16126</a>: PyErr_Format format mismatch in _testcapimodule.c.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15304">Issue #15304</a>: Fix warning message when <a class="reference internal" href="../library/os.html#os.chdir" title="os.chdir"><tt class="xref py py-obj docutils literal"><span class="pre">os.chdir()</span></tt></a> fails inside
<a class="reference internal" href="../library/test.html#test.support.temp_cwd" title="test.support.temp_cwd"><tt class="xref py py-obj docutils literal"><span class="pre">test.support.temp_cwd()</span></tt></a>. Patch by Chris Jerdonek.</li>
<li><a class="reference external" href="http://bugs.python.org/15802">Issue #15802</a>: Fix test logic in <tt class="xref py py-obj docutils literal"><span class="pre">TestMaildir.test_create_tmp()</span></tt>. Patch by
Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15557">Issue #15557</a>: Add a test suite for the <a class="reference internal" href="../library/webbrowser.html#module-webbrowser" title="webbrowser: Easy-to-use controller for Web browsers."><tt class="xref py py-obj docutils literal"><span class="pre">webbrowser</span></tt></a> module, thanks to Anton
Barkovsky.</li>
<li><a class="reference external" href="http://bugs.python.org/16698">Issue #16698</a>: Skip posix test_getgroups when built with OS X
deployment target prior to 10.6.</li>
</ul>
</div>
<div class="section" id="id7">
<h3>Build<a class="headerlink" href="#id7" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17550">Issue #17550</a>: Fix the –enable-profiling configure switch.</li>
<li><a class="reference external" href="http://bugs.python.org/17425">Issue #17425</a>: Build with openssl 1.0.1d on Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/16754">Issue #16754</a>: Fix the incorrect shared library extension on linux. Introduce
two makefile macros SHLIB_SUFFIX and EXT_SUFFIX. SO now has the value of
SHLIB_SUFFIX again (as in 2.x and 3.1). The SO macro is removed in 3.4.</li>
<li><a class="reference external" href="http://bugs.python.org/5033">Issue #5033</a>: Fix building of the sqlite3 extension module when the
SQLite library version has “beta” in it. Patch by Andreas Pelme.</li>
<li><a class="reference external" href="http://bugs.python.org/17228">Issue #17228</a>: Fix building without pymalloc.</li>
<li><a class="reference external" href="http://bugs.python.org/3718">Issue #3718</a>: Use AC_ARG_VAR to set MACHDEP in configure.ac.</li>
<li><a class="reference external" href="http://bugs.python.org/17031">Issue #17031</a>: Fix running regen in cross builds.</li>
<li><a class="reference external" href="http://bugs.python.org/3754">Issue #3754</a>: fix typo in pthread AC_CACHE_VAL.</li>
<li><a class="reference external" href="http://bugs.python.org/15484">Issue #15484</a>: Fix _PYTHON_PROJECT_BASE for srcdir != builddir builds;
use _PYTHON_PROJECT_BASE in distutils/sysconfig.py.</li>
<li><a class="reference external" href="http://bugs.python.org/17029">Issue #17029</a>: Let h2py search the multiarch system include directory.</li>
<li><a class="reference external" href="http://bugs.python.org/16953">Issue #16953</a>: Fix socket module compilation on platforms with
HAVE_BROKEN_POLL. Patch by Jeffrey Armstrong.</li>
<li><a class="reference external" href="http://bugs.python.org/16836">Issue #16836</a>: Enable IPv6 support even if IPv6 is disabled on the build host.</li>
<li>Cross compiling needs host and build settings. configure no longer
creates a broken PYTHON_FOR_BUILD variable when –build is missing.</li>
<li>Fix cross compiling issue in setup.py, ensure that lib_dirs and inc_dirs are
defined in cross compiling mode, too.</li>
<li><a class="reference external" href="http://bugs.python.org/16593">Issue #16593</a>: Have BSD ‘make -s’ do the right thing, thanks to Daniel Shahaf</li>
<li><a class="reference external" href="http://bugs.python.org/16262">Issue #16262</a>: fix out-of-src-tree builds, if mercurial is not installed.</li>
<li><a class="reference external" href="http://bugs.python.org/15298">Issue #15298</a>: ensure _sysconfigdata is generated in build directory, not
source directory.</li>
<li><a class="reference external" href="http://bugs.python.org/15833">Issue #15833</a>: Fix a regression in 3.3 that resulted in exceptions being
raised if importlib failed to write byte-compiled files. This affected
attempts to build Python out-of-tree from a read-only source directory.</li>
<li><a class="reference external" href="http://bugs.python.org/15923">Issue #15923</a>: Fix a mistake in <tt class="docutils literal"><span class="pre">asdl_c.py</span></tt> that resulted in a TypeError
after 2801bf875a24 (see #15801).</li>
<li><a class="reference external" href="http://bugs.python.org/15819">Issue #15819</a>: Make sure we can build Python out-of-tree from a read-only
source directory. (Somewhat related to <a class="reference external" href="http://bugs.python.org/9860">issue #9860</a>.)</li>
<li><a class="reference external" href="http://bugs.python.org/15587">Issue #15587</a>: Enable Tk high-resolution text rendering on Macs with
Retina displays. Applies to Tkinter apps, such as IDLE, on OS X
framework builds linked with Cocoa Tk 8.5.</li>
<li><a class="reference external" href="http://bugs.python.org/17161">Issue #17161</a>: make install now also installs a python3 man page.</li>
</ul>
</div>
<div class="section" id="c-api">
<h3>C-API<a class="headerlink" href="#c-api" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/16881">Issue #16881</a>: Fix Py_ARRAY_LENGTH macro for GCC < 3.1.</li>
</ul>
</div>
<div class="section" id="id8">
<h3>Documentation<a class="headerlink" href="#id8" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Issue 17538: Document XML vulnerabilties</li>
<li><a class="reference external" href="http://bugs.python.org/16642">Issue #16642</a>: sched.scheduler timefunc initial default is time.monotonic.
Patch by Ramchandra Apte</li>
<li><a class="reference external" href="http://bugs.python.org/17047">Issue #17047</a>: remove doubled words in docs and docstrings
reported by Serhiy Storchaka and Matthew Barnett.</li>
<li><a class="reference external" href="http://bugs.python.org/15465">Issue #15465</a>: Document the versioning macros in the C API docs rather than
the standard library docs. Patch by Kushal Das.</li>
<li><a class="reference external" href="http://bugs.python.org/16406">Issue #16406</a>: Combine the pages for uploading and registering to PyPI.</li>
<li><a class="reference external" href="http://bugs.python.org/16403">Issue #16403</a>: Document how distutils uses the maintainer field in
PKG-INFO. Patch by Jyrki Pulliainen.</li>
<li><a class="reference external" href="http://bugs.python.org/16695">Issue #16695</a>: Document how glob handles filenames starting with a
dot. Initial patch by Jyrki Pulliainen.</li>
<li><a class="reference external" href="http://bugs.python.org/8890">Issue #8890</a>: Stop advertising an insecure practice by replacing uses
of the /tmp directory with better alternatives in the documentation.
Patch by Geoff Wilson.</li>
<li><a class="reference external" href="http://bugs.python.org/17203">Issue #17203</a>: add long option names to unittest discovery docs.</li>
<li><a class="reference external" href="http://bugs.python.org/13094">Issue #13094</a>: add “Why do lambdas defined in a loop with different values
all return the same result?” programming FAQ.</li>
<li><a class="reference external" href="http://bugs.python.org/14901">Issue #14901</a>: Update portions of the Windows FAQ.
Patch by Ashish Nitin Patil.</li>
<li><a class="reference external" href="http://bugs.python.org/16267">Issue #16267</a>: Better document the 3.3+ approach to combining
@abstractmethod with @staticmethod, @classmethod and @property</li>
<li><a class="reference external" href="http://bugs.python.org/15209">Issue #15209</a>: Clarify exception chaining description in exceptions module
documentation</li>
<li><a class="reference external" href="http://bugs.python.org/15990">Issue #15990</a>: Improve argument/parameter documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/16209">Issue #16209</a>: Move the documentation for the str built-in function to a new
str class entry in the “Text Sequence Type” section.</li>
<li><a class="reference external" href="http://bugs.python.org/13538">Issue #13538</a>: Improve str() and object.__str__() documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/16489">Issue #16489</a>: Make it clearer that importlib.find_loader() requires any and
all packages to be separately imported.</li>
<li><a class="reference external" href="http://bugs.python.org/16400">Issue #16400</a>: Update the description of which versions of a given package
PyPI displays.</li>
<li><a class="reference external" href="http://bugs.python.org/15677">Issue #15677</a>: Document that zlib and gzip accept a compression level of 0 to
mean ‘no compression’. Patch by Brian Brazil.</li>
<li><a class="reference external" href="http://bugs.python.org/16197">Issue #16197</a>: Update winreg docstrings and documentation to match code.
Patch by Zachary Ware.</li>
<li><a class="reference external" href="http://bugs.python.org/8040">Issue #8040</a>: added a version switcher to the documentation. Patch by
Yury Selivanov.</li>
<li><a class="reference external" href="http://bugs.python.org/16241">Issue #16241</a>: Document -X faulthandler command line option.
Patch by Marek Šuppa.</li>
<li>Additional comments and some style changes in the concurrent.futures URL
retrieval example</li>
<li><a class="reference external" href="http://bugs.python.org/16115">Issue #16115</a>: Improve subprocess.Popen() documentation around args, shell,
and executable arguments.</li>
<li><a class="reference external" href="http://bugs.python.org/15533">Issue #15533</a>: Clarify docs and add tests for <a class="reference internal" href="../library/subprocess.html#subprocess.Popen" title="subprocess.Popen"><tt class="xref py py-obj docutils literal"><span class="pre">subprocess.Popen()</span></tt></a>‘s cwd
argument.</li>
<li><a class="reference external" href="http://bugs.python.org/15979">Issue #15979</a>: Improve timeit documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/16036">Issue #16036</a>: Improve documentation of built-in <a class="reference internal" href="../library/functions.html#int" title="int"><tt class="xref py py-obj docutils literal"><span class="pre">int()</span></tt></a>‘s signature and
arguments.</li>
<li><a class="reference external" href="http://bugs.python.org/15935">Issue #15935</a>: Clarification of <a class="reference internal" href="../library/argparse.html#module-argparse" title="argparse: Command-line option and argument parsing library."><tt class="xref py py-obj docutils literal"><span class="pre">argparse</span></tt></a> docs, re: add_argument() type and
default arguments. Patch contributed by Chris Jerdonek.</li>
<li><a class="reference external" href="http://bugs.python.org/11964">Issue #11964</a>: Document a change in v3.2 to the behavior of the indent
parameter of json encoding operations.</li>
<li><a class="reference external" href="http://bugs.python.org/15116">Issue #15116</a>: Remove references to appscript as it is no longer being
supported.</li>
</ul>
</div>
<div class="section" id="tools-demos">
<h3>Tools/Demos<a class="headerlink" href="#tools-demos" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/17156">Issue #17156</a>: pygettext.py now uses an encoding of source file and correctly
writes and escapes non-ascii characters.</li>
<li><a class="reference external" href="http://bugs.python.org/15539">Issue #15539</a>: Fix a number of bugs in Tools/scripts/pindent.py. Now
pindent.py works with a “with” statement. pindent.py no longer produces
improper indentation. pindent.py now works with continued lines broken after
“class” or “def” keywords and with continuations at the start of line.</li>
<li><a class="reference external" href="http://bugs.python.org/15378">Issue #15378</a>: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/16476">Issue #16476</a>: Fix json.tool to avoid including trailing whitespace.</li>
<li><a class="reference external" href="http://bugs.python.org/16549">Issue #16549</a>: Make json.tool work again on Python 3 and add tests.
Initial patch by Berker Peksag and Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/13301">Issue #13301</a>: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py
Patch by Serhiy Storchaka.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0">
<h2>Python 3.3.0<a class="headerlink" href="#python-3-3-0" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 29-Sep-2012</em></p>
<div class="section" id="id9">
<h3>Core and Builtins<a class="headerlink" href="#id9" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/16046">Issue #16046</a>: Fix loading sourceless legacy .pyo files.</li>
<li><a class="reference external" href="http://bugs.python.org/16060">Issue #16060</a>: Fix refcounting bug when <tt class="xref py py-obj docutils literal"><span class="pre">__trunc__()</span></tt> returns an object whose
<tt class="xref py py-obj docutils literal"><span class="pre">__int__()</span></tt> gives a non-integer. Patch by Serhiy Storchaka.</li>
</ul>
</div>
<div class="section" id="extension-modules">
<h3>Extension Modules<a class="headerlink" href="#extension-modules" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/16012">Issue #16012</a>: Fix a regression in pyexpat. The parser’s <tt class="xref py py-obj docutils literal"><span class="pre">UseForeignDTD()</span></tt>
method doesn’t require an argument again.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-release-candidate-3">
<h2>Python 3.3.0 Release Candidate 3<a class="headerlink" href="#python-3-3-0-release-candidate-3" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 23-Sep-2012</em></p>
<div class="section" id="id10">
<h3>Core and Builtins<a class="headerlink" href="#id10" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15900">Issue #15900</a>: Fix reference leak in <tt class="xref py py-obj docutils literal"><span class="pre">PyUnicode_TranslateCharmap()</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/15926">Issue #15926</a>: Fix crash after multiple reinitializations of the interpreter.</li>
<li><a class="reference external" href="http://bugs.python.org/15895">Issue #15895</a>: Fix FILE pointer leak in one error branch of
<tt class="xref py py-obj docutils literal"><span class="pre">PyRun_SimpleFileExFlags()</span></tt> when filename points to a pyc/pyo file, closeit is
false an and set_main_loader() fails.</li>
<li>Fixes for a few crash and memory leak regressions found by Coverity.</li>
</ul>
</div>
<div class="section" id="id11">
<h3>Library<a class="headerlink" href="#id11" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15882">Issue #15882</a>: Change <tt class="xref py py-obj docutils literal"><span class="pre">_decimal</span></tt> to accept any coefficient tuple when
constructing infinities. This is done for backwards compatibility with
decimal.py: Infinity coefficients are undefined in _decimal (in accordance
with the specification).</li>
<li><a class="reference external" href="http://bugs.python.org/15925">Issue #15925</a>: Fix a regression in <tt class="xref py py-obj docutils literal"><span class="pre">email.util</span></tt> where the <tt class="xref py py-obj docutils literal"><span class="pre">parsedate()</span></tt> and
<tt class="xref py py-obj docutils literal"><span class="pre">parsedate_tz()</span></tt> functions did not return None anymore when the argument could
not be parsed.</li>
</ul>
</div>
<div class="section" id="id12">
<h3>Extension Modules<a class="headerlink" href="#id12" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15973">Issue #15973</a>: Fix a segmentation fault when comparing datetime timezone
objects.</li>
<li><a class="reference external" href="http://bugs.python.org/15977">Issue #15977</a>: Fix memory leak in Modules/_ssl.c when the function
_set_npn_protocols() is called multiple times, thanks to Daniel Sommermann.</li>
<li><a class="reference external" href="http://bugs.python.org/15969">Issue #15969</a>: <a class="reference internal" href="../library/faulthandler.html#module-faulthandler" title="faulthandler: Dump the Python traceback."><tt class="xref py py-obj docutils literal"><span class="pre">faulthandler</span></tt></a> module: rename dump_tracebacks_later() to
dump_traceback_later() and cancel_dump_tracebacks_later() to
cancel_dump_traceback_later().</li>
<li>_decimal module: use only C 89 style comments.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-release-candidate-2">
<h2>Python 3.3.0 Release Candidate 2<a class="headerlink" href="#python-3-3-0-release-candidate-2" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 09-Sep-2012</em></p>
<div class="section" id="id13">
<h3>Core and Builtins<a class="headerlink" href="#id13" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/13992">Issue #13992</a>: The trashcan mechanism is now thread-safe. This eliminates
sporadic crashes in multi-thread programs when several long deallocator chains
ran concurrently and involved subclasses of built-in container types.</li>
<li><a class="reference external" href="http://bugs.python.org/15784">Issue #15784</a>: Modify <a class="reference internal" href="../library/exceptions.html#OSError" title="OSError"><tt class="xref py py-obj docutils literal"><span class="pre">OSError</span></tt></a>.__str__() to better distinguish between errno
error numbers and Windows error numbers.</li>
<li><a class="reference external" href="http://bugs.python.org/15781">Issue #15781</a>: Fix two small race conditions in import’s module locking.</li>
</ul>
</div>
<div class="section" id="id14">
<h3>Library<a class="headerlink" href="#id14" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15847">Issue #15847</a>: Fix a regression in argparse, which did not accept tuples as
argument lists anymore.</li>
<li><a class="reference external" href="http://bugs.python.org/15828">Issue #15828</a>: Restore support for C extensions in <a class="reference internal" href="../library/imp.html#imp.load_module" title="imp.load_module"><tt class="xref py py-obj docutils literal"><span class="pre">imp.load_module()</span></tt></a>.</li>
<li><a class="reference external" href="http://bugs.python.org/15340">Issue #15340</a>: Fix importing the random module when <tt class="docutils literal"><span class="pre">/dev/urandom</span></tt> cannot be
opened. This was a regression caused by the hash randomization patch.</li>
<li><a class="reference external" href="http://bugs.python.org/10650">Issue #10650</a>: Deprecate the watchexp parameter of the <tt class="xref py py-obj docutils literal"><span class="pre">Decimal.quantize()</span></tt>
method.</li>
<li><a class="reference external" href="http://bugs.python.org/15785">Issue #15785</a>: Modify <tt class="xref py py-obj docutils literal"><span class="pre">window.get_wch()</span></tt> API of the curses module: return a
character for most keys, and an integer for special keys, instead of always
returning an integer. So it is now possible to distinguish special keys like
keypad keys.</li>
<li><a class="reference external" href="http://bugs.python.org/14223">Issue #14223</a>: Fix <tt class="xref py py-obj docutils literal"><span class="pre">window.addch()</span></tt> of the curses module for special characters
like curses.ACS_HLINE: the Python function addch(int) and addch(bytes) is now
calling the C function waddch()/mvwaddch() (as it was done in Python 3.2),
instead of wadd_wch()/mvwadd_wch(). The Python function addch(str) is still
calling the C function wadd_wch()/mvwadd_wch() if the Python curses is linked
to libncursesw.</li>
</ul>
</div>
<div class="section" id="id15">
<h3>Build<a class="headerlink" href="#id15" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15822">Issue #15822</a>: Really ensure 2to3 grammar pickles are properly installed
(replaces fixes for <a class="reference external" href="http://bugs.python.org/15645">Issue #15645</a>).</li>
</ul>
</div>
<div class="section" id="id16">
<h3>Documentation<a class="headerlink" href="#id16" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15814">Issue #15814</a>: The memoryview enhancements in 3.3.0 accidentally permitted the
hashing of multi-dimensional memorviews and memoryviews with multi-byte item
formats. The intended restrictions have now been documented - they will be
correctly enforced in 3.3.1.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-release-candidate-1">
<h2>Python 3.3.0 Release Candidate 1<a class="headerlink" href="#python-3-3-0-release-candidate-1" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 25-Aug-2012</em></p>
<div class="section" id="id17">
<h3>Core and Builtins<a class="headerlink" href="#id17" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15573">Issue #15573</a>: memoryview comparisons are now performed by value with full
support for any valid struct module format definition.</li>
<li><a class="reference external" href="http://bugs.python.org/15316">Issue #15316</a>: When an item in the fromlist for <a class="reference internal" href="../library/functions.html#__import__" title="__import__"><tt class="xref py py-obj docutils literal"><span class="pre">__import__()</span></tt></a> doesn’t exist,
don’t raise an error, but if an exception is raised as part of an import do
let that propagate.</li>
<li><a class="reference external" href="http://bugs.python.org/15778">Issue #15778</a>: Ensure that <tt class="docutils literal"><span class="pre">str(ImportError(msg))</span></tt> returns a str even when
msg isn’t a str.</li>
<li><a class="reference external" href="http://bugs.python.org/2051">Issue #2051</a>: Source file permission bits are once again correctly copied to
the cached bytecode file. (The migration to importlib reintroduced this
problem because these was no regression test. A test has been added as part of
this patch)</li>
<li><a class="reference external" href="http://bugs.python.org/15761">Issue #15761</a>: Fix crash when <tt class="docutils literal"><span class="pre">PYTHONEXECUTABLE</span></tt> is set on Mac OS X.</li>
<li><a class="reference external" href="http://bugs.python.org/15726">Issue #15726</a>: Fix incorrect bounds checking in PyState_FindModule. Patch by
Robin Schreiber.</li>
<li><a class="reference external" href="http://bugs.python.org/15604">Issue #15604</a>: Update uses of <tt class="xref py py-obj docutils literal"><span class="pre">PyObject_IsTrue()</span></tt> to check for and handle
errors correctly. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/14846">Issue #14846</a>: <tt class="xref py py-obj docutils literal"><span class="pre">importlib.FileFinder</span></tt> now handles the case where the directory
being searched is removed after a previous import attempt.</li>
</ul>
</div>
<div class="section" id="id18">
<h3>Library<a class="headerlink" href="#id18" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/13370">Issue #13370</a>: Ensure that ctypes works on Mac OS X when Python is compiled
using the clang compiler.</li>
<li><a class="reference external" href="http://bugs.python.org/13072">Issue #13072</a>: The array module’s ‘u’ format code is now deprecated and will be
removed in Python 4.0.</li>
<li><a class="reference external" href="http://bugs.python.org/15544">Issue #15544</a>: Fix Decimal.__float__ to work with payload-carrying NaNs.</li>
<li><a class="reference external" href="http://bugs.python.org/15776">Issue #15776</a>: Allow pyvenv to work in existing directory with –clean.</li>
<li><a class="reference external" href="http://bugs.python.org/15249">Issue #15249</a>: email’s BytesGenerator now correctly mangles From lines (when
requested) even if the body contains undecodable bytes.</li>
<li><a class="reference external" href="http://bugs.python.org/15777">Issue #15777</a>: Fix a refleak in _posixsubprocess.</li>
<li>Issue ##665194: Update <a class="reference internal" href="../library/email.util.html#email.utils.localtime" title="email.utils.localtime"><tt class="xref py py-obj docutils literal"><span class="pre">email.utils.localtime</span></tt></a> to use datetime.astimezone and
correctly handle historic changes in UTC offsets.</li>
<li><a class="reference external" href="http://bugs.python.org/15199">Issue #15199</a>: Fix JavaScript’s default MIME type to application/javascript.
Patch by Bohuslav Kabrda.</li>
<li><a class="reference external" href="http://bugs.python.org/12643">Issue #12643</a>: <a class="reference internal" href="../library/code.html#code.InteractiveConsole" title="code.InteractiveConsole"><tt class="xref py py-obj docutils literal"><span class="pre">code.InteractiveConsole</span></tt></a> now respects <a class="reference internal" href="../library/sys.html#sys.excepthook" title="sys.excepthook"><tt class="xref py py-obj docutils literal"><span class="pre">sys.excepthook</span></tt></a> when
displaying exceptions. Patch by Aaron Iles.</li>
<li><a class="reference external" href="http://bugs.python.org/13579">Issue #13579</a>: <a class="reference internal" href="../library/string.html#string.Formatter" title="string.Formatter"><tt class="xref py py-obj docutils literal"><span class="pre">string.Formatter</span></tt></a> now understands the ‘a’ conversion specifier.</li>
<li><a class="reference external" href="http://bugs.python.org/15595">Issue #15595</a>: Fix <tt class="docutils literal"><span class="pre">subprocess.Popen(universal_newlines=True)</span></tt> for certain
locales (utf-16 and utf-32 family). Patch by Chris Jerdonek.</li>
<li><a class="reference external" href="http://bugs.python.org/15477">Issue #15477</a>: In cmath and math modules, add workaround for platforms whose
system-supplied log1p function doesn’t respect signs of zeros.</li>
<li><a class="reference external" href="http://bugs.python.org/15715">Issue #15715</a>: <a class="reference internal" href="../library/importlib.html#importlib.__import__" title="importlib.__import__"><tt class="xref py py-obj docutils literal"><span class="pre">importlib.__import__()</span></tt></a> will silence an ImportError when the
use of fromlist leads to a failed import.</li>
<li><a class="reference external" href="http://bugs.python.org/14669">Issue #14669</a>: Fix pickling of connections and sockets on Mac OS X by
sending/receiving an acknowledgment after file descriptor transfer.
TestPicklingConnection has been reenabled for Mac OS X.</li>
<li><a class="reference external" href="http://bugs.python.org/11062">Issue #11062</a>: Fix adding a message from file to Babyl mailbox.</li>
<li><a class="reference external" href="http://bugs.python.org/15646">Issue #15646</a>: Prevent equivalent of a fork bomb when using <a class="reference internal" href="../library/multiprocessing.html#module-multiprocessing" title="multiprocessing: Process-based parallelism."><tt class="xref py py-obj docutils literal"><span class="pre">multiprocessing</span></tt></a>
on Windows without the <tt class="docutils literal"><span class="pre">if</span> <span class="pre">__name__</span> <span class="pre">==</span> <span class="pre">'__main__'</span></tt> idiom.</li>
</ul>
</div>
<div class="section" id="id19">
<h3>IDLE<a class="headerlink" href="#id19" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15678">Issue #15678</a>: Fix IDLE menus when started from OS X command line (3.3.0b2
regression).</li>
</ul>
</div>
<div class="section" id="id20">
<h3>Documentation<a class="headerlink" href="#id20" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Touched up the Python 2 to 3 porting guide.</li>
<li><a class="reference external" href="http://bugs.python.org/14674">Issue #14674</a>: Add a discussion of the <a class="reference internal" href="../library/json.html#module-json" title="json: Encode and decode the JSON format."><tt class="xref py py-obj docutils literal"><span class="pre">json</span></tt></a> module’s standard compliance.
Patch by Chris Rebert.</li>
<li>Create a ‘Concurrent Execution’ section in the docs, and split up the
‘Optional Operating System Services’ section to use a more user-centric
classification scheme (splitting them across the new CE section, IPC and text
processing). Operating system limitations can be reflected with the Sphinx
<tt class="docutils literal"><span class="pre">:platform:</span></tt> tag, it doesn’t make sense as part of the Table of Contents.</li>
<li><a class="reference external" href="http://bugs.python.org/4966">Issue #4966</a>: Bring the sequence docs up to date for the Py3k transition and
the many language enhancements since they were original written.</li>
<li>The “path importer” misnomer has been replaced with Eric Snow’s
more-awkward-but-at-least-not-wrong suggestion of “path based finder” in the
import system reference docs.</li>
<li><a class="reference external" href="http://bugs.python.org/15640">Issue #15640</a>: Document <a class="reference internal" href="../library/importlib.html#importlib.abc.Finder" title="importlib.abc.Finder"><tt class="xref py py-obj docutils literal"><span class="pre">importlib.abc.Finder</span></tt></a> as deprecated.</li>
<li><a class="reference external" href="http://bugs.python.org/15630">Issue #15630</a>: Add an example for “continue” stmt in the tutorial. Patch by
Daniel Ellis.</li>
</ul>
</div>
<div class="section" id="id21">
<h3>Tests<a class="headerlink" href="#id21" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15747">Issue #15747</a>: ZFS always returns EOPNOTSUPP when attempting to set the
UF_IMMUTABLE flag (via either chflags or lchflags); refactor affected tests in
test_posix.py to account for this.</li>
<li><a class="reference external" href="http://bugs.python.org/15285">Issue #15285</a>: Refactor the approach for testing connect timeouts using two
external hosts that have been configured specifically for this type of test.</li>
<li><a class="reference external" href="http://bugs.python.org/15743">Issue #15743</a>: Remove the deprecated method usage in <tt class="xref py py-obj docutils literal"><span class="pre">urllib</span></tt> tests. Patch by
Jeff Knupp.</li>
<li><a class="reference external" href="http://bugs.python.org/15615">Issue #15615</a>: Add some tests for the <a class="reference internal" href="../library/json.html#module-json" title="json: Encode and decode the JSON format."><tt class="xref py py-obj docutils literal"><span class="pre">json</span></tt></a> module’s handling of invalid input
data. Patch by Kushal Das.</li>
</ul>
</div>
<div class="section" id="id22">
<h3>Build<a class="headerlink" href="#id22" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Output lib files for PGO build into PGO directory.</li>
<li>Pick up 32-bit launcher from PGO directory on 64-bit PGO build.</li>
<li>Drop <tt class="docutils literal"><span class="pre">PC\python_nt.h</span></tt> as it’s not used. Add input dependency on custom
build step.</li>
<li><a class="reference external" href="http://bugs.python.org/15511">Issue #15511</a>: Drop explicit dependency on pythonxy.lib from _decimal amd64
configuration.</li>
<li>Add missing PGI/PGO configurations for pywlauncher.</li>
<li><a class="reference external" href="http://bugs.python.org/15645">Issue #15645</a>: Ensure 2to3 grammar pickles are properly installed.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-beta-2">
<h2>Python 3.3.0 Beta 2<a class="headerlink" href="#python-3-3-0-beta-2" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 12-Aug-2012</em></p>
<div class="section" id="id23">
<h3>Core and Builtins<a class="headerlink" href="#id23" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15568">Issue #15568</a>: Fix the return value of <tt class="docutils literal"><span class="pre">yield</span> <span class="pre">from</span></tt> when StopIteration is
raised by a custom iterator.</li>
<li><a class="reference external" href="http://bugs.python.org/13119">Issue #13119</a>: <a class="reference internal" href="../library/sys.html#sys.stdout" title="sys.stdout"><tt class="xref py py-obj docutils literal"><span class="pre">sys.stdout</span></tt></a> and <a class="reference internal" href="../library/sys.html#sys.stderr" title="sys.stderr"><tt class="xref py py-obj docutils literal"><span class="pre">sys.stderr</span></tt></a> are now using “rn” newline on
Windows, as Python 2.</li>
<li><a class="reference external" href="http://bugs.python.org/15534">Issue #15534</a>: Fix the fast-search function for non-ASCII Unicode strings.</li>
<li><a class="reference external" href="http://bugs.python.org/15508">Issue #15508</a>: Fix the docstring for <a class="reference internal" href="../library/functions.html#__import__" title="__import__"><tt class="xref py py-obj docutils literal"><span class="pre">__import__()</span></tt></a> to have the proper default
value of 0 for ‘level’ and to not mention negative levels since they are not
supported.</li>
<li><a class="reference external" href="http://bugs.python.org/15425">Issue #15425</a>: Eliminated traceback noise from more situations involving
importlib.</li>
<li><a class="reference external" href="http://bugs.python.org/14578">Issue #14578</a>: Support modules registered in the Windows registry again.</li>
<li><a class="reference external" href="http://bugs.python.org/15466">Issue #15466</a>: Stop using TYPE_INT64 in marshal, to make importlib.h (and other
byte code files) equal between 32-bit and 64-bit systems.</li>
<li><a class="reference external" href="http://bugs.python.org/1692335">Issue #1692335</a>: Move initial exception args assignment to
<tt class="xref py py-obj docutils literal"><span class="pre">BaseException.__new__()</span></tt> to help pickling of naive subclasses.</li>
<li><a class="reference external" href="http://bugs.python.org/12834">Issue #12834</a>: Fix <tt class="xref py py-obj docutils literal"><span class="pre">PyBuffer_ToContiguous()</span></tt> for non-contiguous arrays.</li>
<li><a class="reference external" href="http://bugs.python.org/15456">Issue #15456</a>: Fix code <tt class="xref py py-obj docutils literal"><span class="pre">__sizeof__()</span></tt> after #12399 change. Patch by Serhiy
Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15404">Issue #15404</a>: Refleak in PyMethodObject repr.</li>
<li><a class="reference external" href="http://bugs.python.org/15394">Issue #15394</a>: An issue in <tt class="xref py py-obj docutils literal"><span class="pre">PyModule_Create()</span></tt> that caused references to be
leaked on some error paths has been fixed. Patch by Julia Lawall.</li>
<li><a class="reference external" href="http://bugs.python.org/15368">Issue #15368</a>: An issue that caused bytecode generation to be non-deterministic
has been fixed.</li>
<li><a class="reference external" href="http://bugs.python.org/15202">Issue #15202</a>: Consistently use the name “follow_symlinks” for new parameters
in os and shutil functions.</li>
<li><a class="reference external" href="http://bugs.python.org/15314">Issue #15314</a>: <tt class="docutils literal"><span class="pre">__main__.__loader__</span></tt> is now set correctly during interpreter
startup.</li>
<li><a class="reference external" href="http://bugs.python.org/15111">Issue #15111</a>: When a module imported using ‘from import’ has an ImportError
inside itself, don’t mask that fact behind a generic ImportError for the
module itself.</li>
<li><a class="reference external" href="http://bugs.python.org/15293">Issue #15293</a>: Add GC support to the AST base node type.</li>
<li><a class="reference external" href="http://bugs.python.org/15291">Issue #15291</a>: Fix a memory leak where AST nodes where not properly
deallocated.</li>
<li><a class="reference external" href="http://bugs.python.org/15110">Issue #15110</a>: Fix the tracebacks generated by “import xxx” to not show the
importlib stack frames.</li>
<li><a class="reference external" href="http://bugs.python.org/16369">Issue #16369</a>: Global PyTypeObjects not initialized with PyType_Ready(...).</li>
<li><a class="reference external" href="http://bugs.python.org/15020">Issue #15020</a>: The program name used to search for Python’s path is now
“python3” under Unix, not “python”.</li>
<li><a class="reference external" href="http://bugs.python.org/15897">Issue #15897</a>: zipimport.c doesn’t check return value of fseek().
Patch by Felipe Cruz.</li>
<li><a class="reference external" href="http://bugs.python.org/15033">Issue #15033</a>: Fix the exit status bug when modules invoked using -m switch,
return the proper failure return value (1). Patch contributed by Jeff Knupp.</li>
<li><a class="reference external" href="http://bugs.python.org/15229">Issue #15229</a>: An <a class="reference internal" href="../library/exceptions.html#OSError" title="OSError"><tt class="xref py py-obj docutils literal"><span class="pre">OSError</span></tt></a> subclass whose __init__ doesn’t call back
OSError.__init__ could produce incomplete instances, leading to crashes when
calling str() on them.</li>
<li><a class="reference external" href="http://bugs.python.org/15307">Issue #15307</a>: Virtual environments now use symlinks with framework builds on
Mac OS X, like other POSIX builds.</li>
</ul>
</div>
<div class="section" id="id24">
<h3>Library<a class="headerlink" href="#id24" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14590">Issue #14590</a>: configparser now correctly strips inline comments when delimiter
occurs earlier without preceding space.</li>
<li><a class="reference external" href="http://bugs.python.org/15424">Issue #15424</a>: Add a <tt class="xref py py-obj docutils literal"><span class="pre">__sizeof__()</span></tt> implementation for array objects. Patch by
Ludwig Hähne.</li>
<li><a class="reference external" href="http://bugs.python.org/15576">Issue #15576</a>: Allow extension modules to act as a package’s __init__ module.</li>
<li><a class="reference external" href="http://bugs.python.org/15502">Issue #15502</a>: Have <a class="reference internal" href="../library/importlib.html#importlib.invalidate_caches" title="importlib.invalidate_caches"><tt class="xref py py-obj docutils literal"><span class="pre">importlib.invalidate_caches()</span></tt></a> work on <a class="reference internal" href="../library/sys.html#sys.meta_path" title="sys.meta_path"><tt class="xref py py-obj docutils literal"><span class="pre">sys.meta_path</span></tt></a>
instead of <a class="reference internal" href="../library/sys.html#sys.path_importer_cache" title="sys.path_importer_cache"><tt class="xref py py-obj docutils literal"><span class="pre">sys.path_importer_cache</span></tt></a>.</li>
<li><a class="reference external" href="http://bugs.python.org/15163">Issue #15163</a>: Pydoc shouldn’t list __loader__ as module data.</li>
<li><a class="reference external" href="http://bugs.python.org/15471">Issue #15471</a>: Do not use mutable objects as defaults for
<a class="reference internal" href="../library/importlib.html#importlib.__import__" title="importlib.__import__"><tt class="xref py py-obj docutils literal"><span class="pre">importlib.__import__()</span></tt></a>.</li>
<li><a class="reference external" href="http://bugs.python.org/15559">Issue #15559</a>: To avoid a problematic failure mode when passed to the bytes
constructor, objects in the ipaddress module no longer implement <tt class="xref py py-obj docutils literal"><span class="pre">__index__()</span></tt>
(they still implement <tt class="xref py py-obj docutils literal"><span class="pre">__int__()</span></tt> as appropriate).</li>
<li><a class="reference external" href="http://bugs.python.org/15546">Issue #15546</a>: Fix handling of pathological input data in the peek() and
read1() methods of the BZ2File, GzipFile and LZMAFile classes.</li>
<li><a class="reference external" href="http://bugs.python.org/12655">Issue #12655</a>: Instead of requiring a custom type, <a class="reference internal" href="../library/os.html#os.sched_getaffinity" title="os.sched_getaffinity"><tt class="xref py py-obj docutils literal"><span class="pre">os.sched_getaffinity()</span></tt></a> and
<a class="reference internal" href="../library/os.html#os.sched_setaffinity" title="os.sched_setaffinity"><tt class="xref py py-obj docutils literal"><span class="pre">os.sched_setaffinity()</span></tt></a> now use regular sets of integers to represent the
CPUs a process is restricted to.</li>
<li><a class="reference external" href="http://bugs.python.org/15538">Issue #15538</a>: Fix compilation of the <a class="reference internal" href="../library/socket.html#socket.getnameinfo" title="socket.getnameinfo"><tt class="xref py py-obj docutils literal"><span class="pre">socket.getnameinfo()</span></tt></a> /
<a class="reference internal" href="../library/socket.html#socket.getaddrinfo" title="socket.getaddrinfo"><tt class="xref py py-obj docutils literal"><span class="pre">socket.getaddrinfo()</span></tt></a> emulation code. Patch by Philipp Hagemeister.</li>
<li><a class="reference external" href="http://bugs.python.org/15519">Issue #15519</a>: Properly expose WindowsRegistryFinder in importlib (and use the
correct term for it). Original patch by Eric Snow.</li>
<li><a class="reference external" href="http://bugs.python.org/15502">Issue #15502</a>: Bring the importlib ABCs into line with the current state of the
import protocols given PEP 420. Original patch by Eric Snow.</li>
<li><a class="reference external" href="http://bugs.python.org/15499">Issue #15499</a>: Launching a webbrowser in Unix used to sleep for a few seconds.
Original patch by Anton Barkovsky.</li>
<li><a class="reference external" href="http://bugs.python.org/15463">Issue #15463</a>: The faulthandler module truncates strings to 500 characters,
instead of 100, to be able to display long file paths.</li>
<li><a class="reference external" href="http://bugs.python.org/6056">Issue #6056</a>: Make <a class="reference internal" href="../library/multiprocessing.html#module-multiprocessing" title="multiprocessing: Process-based parallelism."><tt class="xref py py-obj docutils literal"><span class="pre">multiprocessing</span></tt></a> use setblocking(True) on the sockets it
uses. Original patch by J Derek Wilson.</li>
<li><a class="reference external" href="http://bugs.python.org/15364">Issue #15364</a>: Fix sysconfig.get_config_var(‘srcdir’) to be an absolute path.</li>
<li><a class="reference external" href="http://bugs.python.org/15413">Issue #15413</a>: <a class="reference internal" href="../library/os.html#os.times" title="os.times"><tt class="xref py py-obj docutils literal"><span class="pre">os.times()</span></tt></a> had disappeared under Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/15402">Issue #15402</a>: An issue in the struct module that caused <a class="reference internal" href="../library/sys.html#sys.getsizeof" title="sys.getsizeof"><tt class="xref py py-obj docutils literal"><span class="pre">sys.getsizeof()</span></tt></a> to
return incorrect results for struct.Struct instances has been fixed. Initial
patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15232">Issue #15232</a>: When mangle_from is True, <tt class="xref py py-obj docutils literal"><span class="pre">email.Generator</span></tt> now correctly
mangles lines that start with ‘From ‘ that occur in a MIME preamble or
epilogue.</li>
<li><a class="reference external" href="http://bugs.python.org/15094">Issue #15094</a>: Incorrectly placed #endif in _tkinter.c. Patch by Serhiy
Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/13922">Issue #13922</a>: <a class="reference internal" href="../library/argparse.html#module-argparse" title="argparse: Command-line option and argument parsing library."><tt class="xref py py-obj docutils literal"><span class="pre">argparse</span></tt></a> no longer incorrectly strips ‘–’s that appear after
the first one.</li>
<li><a class="reference external" href="http://bugs.python.org/12353">Issue #12353</a>: <a class="reference internal" href="../library/argparse.html#module-argparse" title="argparse: Command-line option and argument parsing library."><tt class="xref py py-obj docutils literal"><span class="pre">argparse</span></tt></a> now correctly handles null argument values.</li>
<li><a class="reference external" href="http://bugs.python.org/10017">Issue #10017</a>, <a class="reference external" href="http://bugs.python.org/14998">issue #14998</a>: Fix TypeError using pprint on dictionaries with
user-defined types as keys or other unorderable keys.</li>
<li><a class="reference external" href="http://bugs.python.org/15397">Issue #15397</a>: <a class="reference internal" href="../library/inspect.html#inspect.getmodulename" title="inspect.getmodulename"><tt class="xref py py-obj docutils literal"><span class="pre">inspect.getmodulename()</span></tt></a> is now based directly on importlib via
a new <a class="reference internal" href="../library/importlib.html#importlib.machinery.all_suffixes" title="importlib.machinery.all_suffixes"><tt class="xref py py-obj docutils literal"><span class="pre">importlib.machinery.all_suffixes()</span></tt></a> API.</li>
<li><a class="reference external" href="http://bugs.python.org/14635">Issue #14635</a>: <a class="reference internal" href="../library/telnetlib.html#module-telnetlib" title="telnetlib: Telnet client class."><tt class="xref py py-obj docutils literal"><span class="pre">telnetlib</span></tt></a> will use poll() rather than select() when possible to
avoid failing due to the select() file descriptor limit.</li>
<li><a class="reference external" href="http://bugs.python.org/15180">Issue #15180</a>: Clarify posixpath.join() error message when mixing str & bytes.</li>
<li><a class="reference external" href="http://bugs.python.org/15343">Issue #15343</a>: pkgutil now includes an iter_importer_modules implementation for
importlib.machinery.FileFinder (similar to the way it already handled
zipimport.zipimporter).</li>
<li><a class="reference external" href="http://bugs.python.org/15314">Issue #15314</a>: runpy now sets __main__.__loader__ correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/15357">Issue #15357</a>: The import emulation in pkgutil is now deprecated. pkgutil uses
importlib internally rather than the emulation.</li>
<li><a class="reference external" href="http://bugs.python.org/15233">Issue #15233</a>: Python now guarantees that callables registered with the atexit
module will be called in a deterministic order.</li>
<li><a class="reference external" href="http://bugs.python.org/15238">Issue #15238</a>: <a class="reference internal" href="../library/shutil.html#shutil.copystat" title="shutil.copystat"><tt class="xref py py-obj docutils literal"><span class="pre">shutil.copystat()</span></tt></a> now copies Linux “extended attributes”.</li>
<li><a class="reference external" href="http://bugs.python.org/15230">Issue #15230</a>: runpy.run_path now correctly sets __package__ as described in
the documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/15315">Issue #15315</a>: Support VS 2010 in distutils cygwincompiler.</li>
<li><a class="reference external" href="http://bugs.python.org/15294">Issue #15294</a>: Fix a regression in pkgutil.extend_path()’s handling of nested
namespace packages.</li>
<li><a class="reference external" href="http://bugs.python.org/15056">Issue #15056</a>: <a class="reference internal" href="../library/imp.html#imp.cache_from_source" title="imp.cache_from_source"><tt class="xref py py-obj docutils literal"><span class="pre">imp.cache_from_source()</span></tt></a> and <a class="reference internal" href="../library/imp.html#imp.source_from_cache" title="imp.source_from_cache"><tt class="xref py py-obj docutils literal"><span class="pre">imp.source_from_cache()</span></tt></a> raise
NotImplementedError when <tt class="xref py py-obj docutils literal"><span class="pre">sys.implementation.cache_tag</span></tt> is set to None.</li>
<li><a class="reference external" href="http://bugs.python.org/15256">Issue #15256</a>: Grammatical mistake in exception raised by <a class="reference internal" href="../library/imp.html#imp.find_module" title="imp.find_module"><tt class="xref py py-obj docutils literal"><span class="pre">imp.find_module()</span></tt></a>.</li>
<li><a class="reference external" href="http://bugs.python.org/5931">Issue #5931</a>: <a class="reference internal" href="../library/wsgiref.html#module-wsgiref" title="wsgiref: WSGI Utilities and Reference Implementation."><tt class="xref py py-obj docutils literal"><span class="pre">wsgiref</span></tt></a> environ variable SERVER_SOFTWARE will specify an
implementation specific term like CPython, Jython instead of generic “Python”.</li>
<li><a class="reference external" href="http://bugs.python.org/13248">Issue #13248</a>: Remove obsolete argument “max_buffer_size” of BufferedWriter and
BufferedRWPair, from the io module.</li>
<li><a class="reference external" href="http://bugs.python.org/13248">Issue #13248</a>: Remove obsolete argument “version” of <a class="reference internal" href="../library/argparse.html#argparse.ArgumentParser" title="argparse.ArgumentParser"><tt class="xref py py-obj docutils literal"><span class="pre">argparse.ArgumentParser</span></tt></a>.</li>
<li><a class="reference external" href="http://bugs.python.org/14814">Issue #14814</a>: Implement more consistent ordering and sorting behaviour for
ipaddress objects.</li>
<li><a class="reference external" href="http://bugs.python.org/14814">Issue #14814</a>: <a class="reference internal" href="../library/ipaddress.html#module-ipaddress" title="ipaddress: IPv4/IPv6 manipulation library."><tt class="xref py py-obj docutils literal"><span class="pre">ipaddress</span></tt></a> network objects correctly return NotImplemented when
compared to arbitrary objects instead of raising TypeError.</li>
<li><a class="reference external" href="http://bugs.python.org/14990">Issue #14990</a>: Correctly fail with SyntaxError on invalid encoding declaration.</li>
<li><a class="reference external" href="http://bugs.python.org/14814">Issue #14814</a>: <a class="reference internal" href="../library/ipaddress.html#module-ipaddress" title="ipaddress: IPv4/IPv6 manipulation library."><tt class="xref py py-obj docutils literal"><span class="pre">ipaddress</span></tt></a> now provides more informative error messages when
constructing instances directly (changes permitted during beta due to
provisional API status).</li>
<li><a class="reference external" href="http://bugs.python.org/15247">Issue #15247</a>: <a class="reference internal" href="../library/io.html#io.FileIO" title="io.FileIO"><tt class="xref py py-obj docutils literal"><span class="pre">io.FileIO</span></tt></a> now raises an error when given a file descriptor
pointing to a directory.</li>
<li><a class="reference external" href="http://bugs.python.org/15261">Issue #15261</a>: Stop os.stat(fd) crashing on Windows when fd not open.</li>
<li><a class="reference external" href="http://bugs.python.org/15166">Issue #15166</a>: Implement <a class="reference internal" href="../library/imp.html#imp.get_tag" title="imp.get_tag"><tt class="xref py py-obj docutils literal"><span class="pre">imp.get_tag()</span></tt></a> using <tt class="xref py py-obj docutils literal"><span class="pre">sys.implementation.cache_tag</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/15210">Issue #15210</a>: Catch KeyError when <tt class="xref py py-obj docutils literal"><span class="pre">importlib.__init__()</span></tt> can’t find
_frozen_importlib in sys.modules, not ImportError.</li>
<li><a class="reference external" href="http://bugs.python.org/15030">Issue #15030</a>: <a class="reference internal" href="../library/importlib.html#importlib.abc.PyPycLoader" title="importlib.abc.PyPycLoader"><tt class="xref py py-obj docutils literal"><span class="pre">importlib.abc.PyPycLoader</span></tt></a> now supports the new source size
header field in .pyc files.</li>
<li><a class="reference external" href="http://bugs.python.org/5346">Issue #5346</a>: Preserve permissions of mbox, MMDF and Babyl mailbox files on
flush().</li>
<li><a class="reference external" href="http://bugs.python.org/10571">Issue #10571</a>: Fix the “–sign” option of distutils’ upload command. Patch by
Jakub Wilk.</li>
<li><a class="reference external" href="http://bugs.python.org/9559">Issue #9559</a>: If messages were only added, a new file is no longer created and
renamed over the old file when flush() is called on an mbox, MMDF or Babyl
mailbox.</li>
<li><a class="reference external" href="http://bugs.python.org/10924">Issue #10924</a>: Fixed <a class="reference internal" href="../library/crypt.html#crypt.mksalt" title="crypt.mksalt"><tt class="xref py py-obj docutils literal"><span class="pre">crypt.mksalt()</span></tt></a> to use a RNG that is suitable for
cryptographic purpose.</li>
<li><a class="reference external" href="http://bugs.python.org/15184">Issue #15184</a>: Ensure consistent results of OS X configuration tailoring for
universal builds by factoring out common OS X-specific customizations from
sysconfig, distutils.sysconfig, distutils.util, and distutils.unixccompiler
into a new module _osx_support.</li>
</ul>
</div>
<div class="section" id="id25">
<h3>C API<a class="headerlink" href="#id25" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15610">Issue #15610</a>: <tt class="xref py py-obj docutils literal"><span class="pre">PyImport_ImportModuleEx()</span></tt> now uses a ‘level’ of 0 instead of -1.</li>
<li><a class="reference external" href="http://bugs.python.org/15169">Issue #15169</a>, <a class="reference external" href="http://bugs.python.org/14599">issue #14599</a>: Strip out the C implementation of
<a class="reference internal" href="../library/imp.html#imp.source_from_cache" title="imp.source_from_cache"><tt class="xref py py-obj docutils literal"><span class="pre">imp.source_from_cache()</span></tt></a> used by PyImport_ExecCodeModuleWithPathnames() and
used the Python code instead. Leads to PyImport_ExecCodeModuleObject() to not
try to infer the source path from the bytecode path as
PyImport_ExecCodeModuleWithPathnames() does.</li>
</ul>
</div>
<div class="section" id="id26">
<h3>Extension Modules<a class="headerlink" href="#id26" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/6493">Issue #6493</a>: An issue in ctypes on Windows that caused structure bitfields of
type <a class="reference internal" href="../library/ctypes.html#ctypes.c_uint32" title="ctypes.c_uint32"><tt class="xref py py-obj docutils literal"><span class="pre">ctypes.c_uint32</span></tt></a> and width 32 to incorrectly be set has been fixed.</li>
<li><a class="reference external" href="http://bugs.python.org/15194">Issue #15194</a>: Update libffi to the 3.0.11 release.</li>
</ul>
</div>
<div class="section" id="id27">
<h3>IDLE<a class="headerlink" href="#id27" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/13052">Issue #13052</a>: Fix IDLE crashing when replace string in Search/Replace dialog
ended with <tt class="docutils literal"><span class="pre">\</span></tt>. Patch by Roger Serwy.</li>
</ul>
</div>
<div class="section" id="id28">
<h3>Tools/Demos<a class="headerlink" href="#id28" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15458">Issue #15458</a>: python-config gets a new option –configdir to print the $LIBPL
value.</li>
<li>Move importlib.test.benchmark to Tools/importbench.</li>
<li><a class="reference external" href="http://bugs.python.org/12605">Issue #12605</a>: The gdb hooks for debugging CPython (within Tools/gdb) have been
enhanced to show information on more C frames relevant to CPython within the
“py-bt” and “py-bt-full” commands:<ul>
<li>C frames that are waiting on the GIL</li>
<li>C frames that are garbage-collecting</li>
<li>C frames that are due to the invocation of a PyCFunction</li>
</ul>
</li>
</ul>
</div>
<div class="section" id="id29">
<h3>Documentation<a class="headerlink" href="#id29" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15041">Issue #15041</a>: Update “see also” list in tkinter documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/15444">Issue #15444</a>: Use proper spelling for non-ASCII contributor names. Patch by
Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15295">Issue #15295</a>: Reorganize and rewrite the documentation on the import system.</li>
<li><a class="reference external" href="http://bugs.python.org/15230">Issue #15230</a>: Clearly document some of the limitations of the runpy module and
nudge readers towards importlib when appropriate.</li>
<li><a class="reference external" href="http://bugs.python.org/15053">Issue #15053</a>: Copy Python 3.3 import lock change notice to all relevant
functions in imp instead of just at the top of the relevant section.</li>
<li><a class="reference external" href="http://bugs.python.org/15288">Issue #15288</a>: Link to the term “loader” in notes in pkgutil about how things
won’t work as expected in Python 3.3 and mark the requisite functions as
“changed” since they will no longer work with modules directly imported by
import itself.</li>
<li><a class="reference external" href="http://bugs.python.org/13557">Issue #13557</a>: Clarify effect of giving two different namespaces to <a class="reference internal" href="../library/functions.html#exec" title="exec"><tt class="xref py py-obj docutils literal"><span class="pre">exec()</span></tt></a> or
<tt class="xref py py-obj docutils literal"><span class="pre">execfile()</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/15250">Issue #15250</a>: Document that <a class="reference internal" href="../library/filecmp.html#filecmp.dircmp" title="filecmp.dircmp"><tt class="xref py py-obj docutils literal"><span class="pre">filecmp.dircmp()</span></tt></a> compares files shallowly. Patch
contributed by Chris Jerdonek.</li>
</ul>
</div>
<div class="section" id="id30">
<h3>Tests<a class="headerlink" href="#id30" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15467">Issue #15467</a>: Move helpers for <tt class="xref py py-obj docutils literal"><span class="pre">__sizeof__()</span></tt> tests into test_support. Patch
by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15320">Issue #15320</a>: Make iterating the list of tests thread-safe when running tests
in multiprocess mode. Patch by Chris Jerdonek.</li>
<li><a class="reference external" href="http://bugs.python.org/15168">Issue #15168</a>: Move <tt class="xref py py-obj docutils literal"><span class="pre">importlib.test</span></tt> to <tt class="xref py py-obj docutils literal"><span class="pre">test.test_importlib</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/15091">Issue #15091</a>: Reactivate a test on UNIX which was failing thanks to a
forgotten <a class="reference internal" href="../library/importlib.html#importlib.invalidate_caches" title="importlib.invalidate_caches"><tt class="xref py py-obj docutils literal"><span class="pre">importlib.invalidate_caches()</span></tt></a> call.</li>
<li><a class="reference external" href="http://bugs.python.org/15230">Issue #15230</a>: Adopted a more systematic approach in the runpy tests.</li>
<li><a class="reference external" href="http://bugs.python.org/15300">Issue #15300</a>: Ensure the temporary test working directories are in the same
parent folder when running tests in multiprocess mode from a Python build.
Patch by Chris Jerdonek.</li>
<li><a class="reference external" href="http://bugs.python.org/15284">Issue #15284</a>: Skip {send,recv}msg tests in test_socket when IPv6 is not
enabled. Patch by Brian Brazil.</li>
<li><a class="reference external" href="http://bugs.python.org/15277">Issue #15277</a>: Fix a resource leak in support.py when IPv6 is disabled. Patch
by Brian Brazil.</li>
</ul>
</div>
<div class="section" id="id31">
<h3>Build<a class="headerlink" href="#id31" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/11715">Issue #11715</a>: Fix multiarch detection without having Debian development tools
(dpkg-dev) installed.</li>
<li><a class="reference external" href="http://bugs.python.org/15037">Issue #15037</a>: Build OS X installers with local copy of ncurses 5.9 libraries
to avoid curses.unget_wch bug present in older versions of ncurses such as
those shipped with OS X.</li>
<li><a class="reference external" href="http://bugs.python.org/15560">Issue #15560</a>: Fix building _sqlite3 extension on OS X with an SDK. Also, for
OS X installers, ensure consistent sqlite3 behavior and feature availability
by building a local copy of libsqlite3 rather than depending on the wide range
of versions supplied with various OS X releases.</li>
<li><a class="reference external" href="http://bugs.python.org/8847">Issue #8847</a>: Disable COMDAT folding in Windows PGO builds.</li>
<li><a class="reference external" href="http://bugs.python.org/14018">Issue #14018</a>: Fix OS X Tcl/Tk framework checking when using OS X SDKs.</li>
<li><a class="reference external" href="http://bugs.python.org/16256">Issue #16256</a>: OS X installer now sets correct permissions for doc directory.</li>
<li><a class="reference external" href="http://bugs.python.org/15431">Issue #15431</a>: Add _freeze_importlib project to regenerate importlib.h on
Windows. Patch by Kristján Valur Jónsson.</li>
<li><a class="reference external" href="http://bugs.python.org/14197">Issue #14197</a>: For OS X framework builds, ensure links to the shared library
are created with the proper ABI suffix.</li>
<li><a class="reference external" href="http://bugs.python.org/14330">Issue #14330</a>: For cross builds, don’t use host python, use host search paths
for host compiler.</li>
<li><a class="reference external" href="http://bugs.python.org/15235">Issue #15235</a>: Allow Berkley DB versions up to 5.3 to build the dbm module.</li>
<li><a class="reference external" href="http://bugs.python.org/15268">Issue #15268</a>: Search curses.h in /usr/include/ncursesw.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-beta-1">
<h2>Python 3.3.0 Beta 1<a class="headerlink" href="#python-3-3-0-beta-1" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 27-Jun-2012</em></p>
<div class="section" id="id32">
<h3>Core and Builtins<a class="headerlink" href="#id32" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fix a (most likely) very rare memory leak when calling main() and not being
able to decode a command-line argument.</li>
<li><a class="reference external" href="http://bugs.python.org/14815">Issue #14815</a>: Use Py_ssize_t instead of long for the object hash, to
preserve all 64 bits of hash on Win64.</li>
<li><a class="reference external" href="http://bugs.python.org/12268">Issue #12268</a>: File readline, readlines and read() or readall() methods
no longer lose data when an underlying read system call is interrupted.
IOError is no longer raised due to a read system call returning EINTR
from within these methods.</li>
<li><a class="reference external" href="http://bugs.python.org/11626">Issue #11626</a>: Add _SizeT functions to stable ABI.</li>
<li><a class="reference external" href="http://bugs.python.org/15142">Issue #15142</a>: Fix reference leak when deallocating instances of types
created using PyType_FromSpec().</li>
<li><a class="reference external" href="http://bugs.python.org/10053">Issue #10053</a>: Don’t close FDs when FileIO.__init__ fails. Loosely based on
the work by Hirokazu Yamamoto.</li>
<li><a class="reference external" href="http://bugs.python.org/15096">Issue #15096</a>: Removed support for ur’’ as the raw notation isn’t
compatible with Python 2.x’s raw unicode strings.</li>
<li><a class="reference external" href="http://bugs.python.org/13783">Issue #13783</a>: Generator objects now use the identifier APIs internally</li>
<li><a class="reference external" href="http://bugs.python.org/14874">Issue #14874</a>: Restore charmap decoding speed to pre-PEP 393 levels.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15026">Issue #15026</a>: utf-16 encoding is now significantly faster (up to 10x).
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/11022">Issue #11022</a>: open() and io.TextIOWrapper are now calling
locale.getpreferredencoding(False) instead of locale.getpreferredencoding()
in text mode if the encoding is not specified. Don’t change temporary the
locale encoding using locale.setlocale(), use the current locale encoding
instead of the user preferred encoding.</li>
<li><a class="reference external" href="http://bugs.python.org/14673">Issue #14673</a>: Add Eric Snow’s sys.implementation implementation.</li>
<li><a class="reference external" href="http://bugs.python.org/15038">Issue #15038</a>: Optimize python Locks on Windows.</li>
</ul>
</div>
<div class="section" id="id33">
<h3>Library<a class="headerlink" href="#id33" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/16305">Issue #16305</a>: Fix a segmentation fault occurring when interrupting
math.factorial.</li>
<li><a class="reference external" href="http://bugs.python.org/12288">Issue #12288</a>: Consider ‘0’ and ‘0.0’ as valid initialvalue
for tkinter SimpleDialog.</li>
<li><a class="reference external" href="http://bugs.python.org/15512">Issue #15512</a>: Add a __sizeof__ implementation for parser.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15469">Issue #15469</a>: Add a __sizeof__ implementation for deque objects.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15489">Issue #15489</a>: Add a __sizeof__ implementation for BytesIO objects.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15487">Issue #15487</a>: Add a __sizeof__ implementation for buffered I/O objects.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15514">Issue #15514</a>: Correct __sizeof__ support for cpu_set.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15177">Issue #15177</a>: Added dir_fd parameter to os.fwalk().</li>
<li><a class="reference external" href="http://bugs.python.org/15061">Issue #15061</a>: Re-implemented hmac.compare_digest() in C to prevent further
timing analysis and to support all buffer protocol aware objects as well as
ASCII only str instances safely.</li>
<li><a class="reference external" href="http://bugs.python.org/15164">Issue #15164</a>: Change return value of platform.uname() from a
plain tuple to a collections.namedtuple.</li>
<li>Support Mageia Linux in the platform module.</li>
<li><a class="reference external" href="http://bugs.python.org/11678">Issue #11678</a>: Support Arch linux in the platform module.</li>
<li><a class="reference external" href="http://bugs.python.org/15118">Issue #15118</a>: Change return value of os.uname() and os.times() from
plain tuples to immutable iterable objects with named attributes
(structseq objects).</li>
<li>Speed up _decimal by another 10-15% by caching the thread local context
that was last accessed. In the pi benchmark (64-bit platform, prec=9),
_decimal is now only 1.5x slower than float.</li>
<li>Remove the packaging module, which is not ready for prime time.</li>
<li><a class="reference external" href="http://bugs.python.org/15154">Issue #15154</a>: Add “dir_fd” parameter to os.rmdir, remove “rmdir”
parameter from os.remove / os.unlink.</li>
<li><a class="reference external" href="http://bugs.python.org/4489">Issue #4489</a>: Add a shutil.rmtree that isn’t susceptible to symlink attacks.
It is used automatically on platforms supporting the necessary os.openat()
and os.unlinkat() functions. Main code by Martin von Löwis.</li>
<li><a class="reference external" href="http://bugs.python.org/15156">Issue #15156</a>: HTMLParser now uses the new “html.entities.html5” dictionary.</li>
<li><a class="reference external" href="http://bugs.python.org/11113">Issue #11113</a>: add a new “html5” dictionary containing the named character
references defined by the HTML5 standard and the equivalent Unicode
character(s) to the html.entities module.</li>
<li><a class="reference external" href="http://bugs.python.org/15114">Issue #15114</a>: the strict mode of HTMLParser and the HTMLParseError exception
are deprecated now that the parser is able to parse invalid markup.</li>
<li><a class="reference external" href="http://bugs.python.org/3665">Issue #3665</a>: u and U escapes are now supported in unicode regular
expressions. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15153">Issue #15153</a>: Added inspect.getgeneratorlocals to simplify white box
testing of generator state updates</li>
<li><a class="reference external" href="http://bugs.python.org/13062">Issue #13062</a>: Added inspect.getclosurevars to simplify testing stateful
closures</li>
<li><a class="reference external" href="http://bugs.python.org/11024">Issue #11024</a>: Fixes and additional tests for Time2Internaldate.</li>
<li><a class="reference external" href="http://bugs.python.org/14626">Issue #14626</a>: Large refactoring of functions / parameters in the os module.
Many functions now support “dir_fd” and “follow_symlinks” parameters;
some also support accepting an open file descriptor in place of a path
string. Added os.support_* collections as LBYL helpers. Removed many
functions only previously seen in 3.3 alpha releases (often starting with
“f” or “l”, or ending with “at”). Originally suggested by Serhiy Storchaka;
implemented by Larry Hastings.</li>
<li><a class="reference external" href="http://bugs.python.org/15008">Issue #15008</a>: Implement PEP 362 “Signature Objects”.
Patch by Yury Selivanov.</li>
<li>Issue: #15138: base64.urlsafe_{en,de}code() are now 3-4x faster.</li>
<li><a class="reference external" href="http://bugs.python.org/444582">Issue #444582</a>: Add shutil.which, for finding programs on the system path.
Original patch by Erik Demaine, with later iterations by Jan Killian
and Brian Curtin.</li>
<li><a class="reference external" href="http://bugs.python.org/14837">Issue #14837</a>: SSL errors now have <tt class="docutils literal"><span class="pre">library</span></tt> and <tt class="docutils literal"><span class="pre">reason</span></tt> attributes
describing precisely what happened and in which OpenSSL submodule. The
str() of a SSLError is also enhanced accordingly.</li>
<li><a class="reference external" href="http://bugs.python.org/9527">Issue #9527</a>: datetime.astimezone() method will now supply a class
timezone instance corresponding to the system local timezone when
called with no arguments.</li>
<li><a class="reference external" href="http://bugs.python.org/14653">Issue #14653</a>: email.utils.mktime_tz() no longer relies on system
mktime() when timezone offest is supplied.</li>
<li><a class="reference external" href="http://bugs.python.org/14684">Issue #14684</a>: zlib.compressobj() and zlib.decompressobj() now support the use
of predefined compression dictionaries. Original patch by Sam Rushing.</li>
<li>Fix GzipFile’s handling of filenames given as bytes objects.</li>
<li><a class="reference external" href="http://bugs.python.org/14772">Issue #14772</a>: Return destination values from some shutil functions.</li>
<li><a class="reference external" href="http://bugs.python.org/15064">Issue #15064</a>: Implement context manager protocol for multiprocessing types</li>
<li><a class="reference external" href="http://bugs.python.org/15101">Issue #15101</a>: Make pool finalizer avoid joining current thread.</li>
<li><a class="reference external" href="http://bugs.python.org/14657">Issue #14657</a>: The frozen instance of importlib used for bootstrap is now
also the module imported as importlib._bootstrap.</li>
<li><a class="reference external" href="http://bugs.python.org/14055">Issue #14055</a>: Add __sizeof__ support to _elementtree.</li>
<li><a class="reference external" href="http://bugs.python.org/15054">Issue #15054</a>: A bug in tokenize.tokenize that caused string literals
with ‘b’ prefixes to be incorrectly tokenized has been fixed.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/15006">Issue #15006</a>: Allow equality comparison between naive and aware
time or datetime objects.</li>
<li><a class="reference external" href="http://bugs.python.org/15036">Issue #15036</a>: Mailbox no longer throws an error if a flush is done
between operations when removing or changing multiple items in mbox,
MMDF, or Babyl mailboxes.</li>
<li><a class="reference external" href="http://bugs.python.org/14059">Issue #14059</a>: Implement multiprocessing.Barrier.</li>
<li><a class="reference external" href="http://bugs.python.org/15061">Issue #15061</a>: The inappropriately named hmac.secure_compare has been
renamed to hmac.compare_digest, restricted to operating on bytes inputs
only and had its documentation updated to more accurately reflect both its
intent and its limitations</li>
<li><a class="reference external" href="http://bugs.python.org/13841">Issue #13841</a>: Make child processes exit using sys.exit() on Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/14936">Issue #14936</a>: curses_panel was converted to PEP 3121 and PEP 384 API.
Patch by Robin Schreiber.</li>
<li><a class="reference external" href="http://bugs.python.org/1667546">Issue #1667546</a>: On platforms supporting tm_zone and tm_gmtoff fields
in struct tm, time.struct_time objects returned by time.gmtime(),
time.localtime() and time.strptime() functions now have tm_zone and
tm_gmtoff attributes. Original patch by Paul Boddie.</li>
<li>Rename adjusted attribute to adjustable in time.get_clock_info() result.</li>
<li><a class="reference external" href="http://bugs.python.org/3518">Issue #3518</a>: Remove references to non-existent BaseManager.from_address()
method.</li>
<li><a class="reference external" href="http://bugs.python.org/13857">Issue #13857</a>: Added textwrap.indent() function (initial patch by Ezra
Berch)</li>
<li><a class="reference external" href="http://bugs.python.org/2736">Issue #2736</a>: Added datetime.timestamp() method.</li>
<li><a class="reference external" href="http://bugs.python.org/13854">Issue #13854</a>: Make multiprocessing properly handle non-integer
non-string argument to SystemExit.</li>
<li><a class="reference external" href="http://bugs.python.org/12157">Issue #12157</a>: Make pool.map() empty iterables correctly. Initial
patch by mouad.</li>
<li><a class="reference external" href="http://bugs.python.org/11823">Issue #11823</a>: disassembly now shows argument counts on calls with keyword args.</li>
<li><a class="reference external" href="http://bugs.python.org/14711">Issue #14711</a>: os.stat_float_times() has been deprecated.</li>
<li>LZMAFile now accepts the modes “rb”/”wb”/”ab” as synonyms of “r”/”w”/”a”.</li>
<li>The bz2 and lzma modules now each contain an open() function, allowing
compressed files to readily be opened in text mode as well as binary mode.</li>
<li>BZ2File.__init__() and LZMAFile.__init__() now accept a file object as their
first argument, rather than requiring a separate “fileobj” argument.</li>
<li>gzip.open() now accepts file objects as well as filenames.</li>
<li><a class="reference external" href="http://bugs.python.org/14992">Issue #14992</a>: os.makedirs(path, exist_ok=True) would raise an OSError
when the path existed and had the S_ISGID mode bit set when it was
not explicitly asked for. This is no longer an exception as mkdir
cannot control if the OS sets that bit for it or not.</li>
<li><a class="reference external" href="http://bugs.python.org/14989">Issue #14989</a>: Make the CGI enable option to http.server available via command
line.</li>
<li><a class="reference external" href="http://bugs.python.org/14987">Issue #14987</a>: Add a missing import statement to inspect.</li>
<li><a class="reference external" href="http://bugs.python.org/1079">Issue #1079</a>: email.header.decode_header now correctly parses all the examples
in RFC2047. There is a necessary visible behavior change: the leading and/or
trailing whitespace on ASCII parts is now preserved.</li>
<li><a class="reference external" href="http://bugs.python.org/14969">Issue #14969</a>: Better handling of exception chaining in contextlib.ExitStack</li>
<li><a class="reference external" href="http://bugs.python.org/14963">Issue #14963</a>: Convert contextlib.ExitStack.__exit__ to use an iterative
algorithm (Patch by Alon Horev)</li>
<li><a class="reference external" href="http://bugs.python.org/14785">Issue #14785</a>: Add sys._debugmallocstats() to help debug low-level memory
allocation issues</li>
<li><a class="reference external" href="http://bugs.python.org/14443">Issue #14443</a>: Ensure that .py files are byte-compiled with the correct Python
executable within bdist_rpm even on older versions of RPM</li>
</ul>
</div>
<div class="section" id="id34">
<h3>C-API<a class="headerlink" href="#id34" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15146">Issue #15146</a>: Add PyType_FromSpecWithBases. Patch by Robin Schreiber.</li>
<li><a class="reference external" href="http://bugs.python.org/15042">Issue #15042</a>: Add PyState_AddModule and PyState_RemoveModule. Add version
guard for Py_LIMITED_API additions. Patch by Robin Schreiber.</li>
<li><a class="reference external" href="http://bugs.python.org/13783">Issue #13783</a>: Inadvertent additions to the public C API in the PEP 380
implementation have either been removed or marked as private interfaces.</li>
</ul>
</div>
<div class="section" id="id35">
<h3>Extension Modules<a class="headerlink" href="#id35" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15000">Issue #15000</a>: Support the “unique” x32 architecture in _posixsubprocess.c.</li>
</ul>
</div>
<div class="section" id="id36">
<h3>IDLE<a class="headerlink" href="#id36" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/9803">Issue #9803</a>: Don’t close IDLE on saving if breakpoint is open.
Patch by Roger Serwy.</li>
<li><a class="reference external" href="http://bugs.python.org/14962">Issue #14962</a>: Update text coloring in IDLE shell window after changing
options. Patch by Roger Serwy.</li>
</ul>
</div>
<div class="section" id="id37">
<h3>Documentation<a class="headerlink" href="#id37" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15176">Issue #15176</a>: Clarified behavior, documentation, and implementation
of os.listdir().</li>
<li><a class="reference external" href="http://bugs.python.org/14982">Issue #14982</a>: Document that pkgutil’s iteration functions require the
non-standard iter_modules() method to be defined by an importer (something
the importlib importers do not define).</li>
<li><a class="reference external" href="http://bugs.python.org/15081">Issue #15081</a>: Document PyState_FindModule.
Patch by Robin Schreiber.</li>
<li><a class="reference external" href="http://bugs.python.org/14814">Issue #14814</a>: Added first draft of ipaddress module API reference</li>
</ul>
</div>
<div class="section" id="id38">
<h3>Tests<a class="headerlink" href="#id38" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/15187">Issue #15187</a>: Bugfix: remove temporary directories test_shutil was leaving
behind.</li>
<li><a class="reference external" href="http://bugs.python.org/14769">Issue #14769</a>: test_capi now has SkipitemTest, which cleverly checks
for “parity” between PyArg_ParseTuple() and the Python/getargs.c static
function skipitem() for all possible “format units”.</li>
<li>test_nntplib now tolerates being run from behind NNTP gateways that add
“X-Antivirus” headers to articles</li>
<li><a class="reference external" href="http://bugs.python.org/15043">Issue #15043</a>: test_gdb is now skipped entirely if gdb security settings
block loading of the gdb hooks</li>
<li><a class="reference external" href="http://bugs.python.org/14963">Issue #14963</a>: Add test cases for exception handling behaviour
in contextlib.ExitStack (Initial patch by Alon Horev)</li>
</ul>
</div>
<div class="section" id="id39">
<h3>Build<a class="headerlink" href="#id39" title="Permalink to this headline">¶</a></h3>
<ul>
<li><dl class="first docutils">
<dt><a class="reference external" href="http://bugs.python.org/13590">Issue #13590</a>: Improve support for OS X Xcode 4:</dt>
<dd><ul class="first last simple">
<li>Try to avoid building Python or extension modules with problematic
llvm-gcc compiler.</li>
<li>Since Xcode 4 removes ppc support, extension module builds now
check for ppc compiler support and automatically remove ppc and
ppc64 archs when not available.</li>
<li>Since Xcode 4 no longer install SDKs in default locations,
extension module builds now revert to using installed headers
and libs if the SDK used to build the interpreter is not
available.</li>
<li>Update ./configure to use better defaults for universal builds;
in particular, –enable-universalsdk=yes uses the Xcode default
SDK and –with-universal-archs now defaults to “intel” if ppc
not available.</li>
</ul>
</dd>
</dl>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/14225">Issue #14225</a>: Fix Unicode support for curses (#12567) on OS X</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/14928">Issue #14928</a>: Fix importlib bootstrap issues by using a custom executable
(Modules/_freeze_importlib) to build Python/importlib.h.</p>
</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-alpha-4">
<h2>Python 3.3.0 Alpha 4<a class="headerlink" href="#python-3-3-0-alpha-4" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 31-May-2012</em></p>
<div class="section" id="id40">
<h3>Core and Builtins<a class="headerlink" href="#id40" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14835">Issue #14835</a>: Make plistlib output empty arrays & dicts like OS X.
Patch by Sidney San Martín.</li>
<li><a class="reference external" href="http://bugs.python.org/14744">Issue #14744</a>: Use the new _PyUnicodeWriter internal API to speed up
str%args and str.format(args).</li>
<li><a class="reference external" href="http://bugs.python.org/14930">Issue #14930</a>: Make memoryview objects weakrefable.</li>
<li><a class="reference external" href="http://bugs.python.org/14775">Issue #14775</a>: Fix a potential quadratic dict build-up due to the garbage
collector repeatedly trying to untrack dicts.</li>
<li><a class="reference external" href="http://bugs.python.org/14857">Issue #14857</a>: fix regression in references to PEP 3135 implicit __class__
closure variable (Reopens <a class="reference external" href="http://bugs.python.org/12370">issue #12370</a>)</li>
<li><a class="reference external" href="http://bugs.python.org/14712">Issue #14712</a> (PEP 405): Virtual environments. Implemented by Vinay Sajip.</li>
<li><a class="reference external" href="http://bugs.python.org/14660">Issue #14660</a> (PEP 420): Namespace packages. Implemented by Eric Smith.</li>
<li><a class="reference external" href="http://bugs.python.org/14494">Issue #14494</a>: Fix __future__.py and its documentation to note that
absolute imports are the default behavior in 3.0 instead of 2.7.
Patch by Sven Marnach.</li>
<li><a class="reference external" href="http://bugs.python.org/9260">Issue #9260</a>: A finer-grained import lock. Most of the import sequence
now uses per-module locks rather than the global import lock, eliminating
well-known issues with threads and imports.</li>
<li><a class="reference external" href="http://bugs.python.org/14624">Issue #14624</a>: UTF-16 decoding is now 3x to 4x faster on various inputs.
Patch by Serhiy Storchaka.</li>
<li>asdl_seq and asdl_int_seq are now Py_ssize_t sized.</li>
<li><a class="reference external" href="http://bugs.python.org/14133">Issue #14133</a> (PEP 415): Implement suppression of __context__ display with an
attribute on BaseException. This replaces the original mechanism of PEP 409.</li>
<li><a class="reference external" href="http://bugs.python.org/14417">Issue #14417</a>: Mutating a dict during lookup now restarts the lookup instead
of raising a RuntimeError (undoes <a class="reference external" href="http://bugs.python.org/14205">issue #14205</a>).</li>
<li><a class="reference external" href="http://bugs.python.org/14738">Issue #14738</a>: Speed-up UTF-8 decoding on non-ASCII data. Patch by Serhiy
Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/14700">Issue #14700</a>: Fix two broken and undefined-behaviour-inducing overflow checks
in old-style string formatting.</li>
</ul>
</div>
<div class="section" id="id41">
<h3>Library<a class="headerlink" href="#id41" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14690">Issue #14690</a>: Use monotonic clock instead of system clock in the sched,
subprocess and trace modules.</li>
<li><a class="reference external" href="http://bugs.python.org/14443">Issue #14443</a>: Tell rpmbuild to use the correct version of Python in
bdist_rpm. Initial patch by Ross Lagerwall.</li>
<li><a class="reference external" href="http://bugs.python.org/12515">Issue #12515</a>: email now registers a defect if it gets to EOF while parsing
a MIME part without seeing the closing MIME boundary.</li>
<li><a class="reference external" href="http://bugs.python.org/1672568">Issue #1672568</a>: email now always decodes base64 payloads, adding padding and
ignoring non-base64-alphabet characters if needed, and registering defects
for any such problems.</li>
<li><a class="reference external" href="http://bugs.python.org/14925">Issue #14925</a>: email now registers a defect when the parser decides that there
is a missing header/body separator line. MalformedHeaderDefect, which the
existing code would never actually generate, is deprecated.</li>
<li><a class="reference external" href="http://bugs.python.org/10365">Issue #10365</a>: File open dialog now works instead of crashing even when
the parent window is closed before the dialog. Patch by Roger Serwy.</li>
<li><a class="reference external" href="http://bugs.python.org/8739">Issue #8739</a>: Updated smtpd to support RFC 5321, and added support for the
RFC 1870 SIZE extension.</li>
<li><a class="reference external" href="http://bugs.python.org/665194">Issue #665194</a>: Added a localtime function to email.utils to provide an
aware local datetime for use in setting Date headers.</li>
<li><a class="reference external" href="http://bugs.python.org/12586">Issue #12586</a>: Added new provisional policies that implement convenient
unicode support for email headers. See What’s New for details.</li>
<li><a class="reference external" href="http://bugs.python.org/14731">Issue #14731</a>: Refactored email Policy framework to support full backward
compatibility with Python 3.2 by default yet allow for the introduction of
new features through new policies. Note that Policy.must_be_7bit is renamed
to cte_type.</li>
<li><a class="reference external" href="http://bugs.python.org/14876">Issue #14876</a>: Use user-selected font for highlight configuration.</li>
<li><a class="reference external" href="http://bugs.python.org/14920">Issue #14920</a>: Fix the help(urllib.parse) failure on locale C on terminals.
Have ascii characters in help.</li>
<li><a class="reference external" href="http://bugs.python.org/14548">Issue #14548</a>: Make multiprocessing finalizers check pid before
running to cope with possibility of gc running just after fork.</li>
<li><a class="reference external" href="http://bugs.python.org/14036">Issue #14036</a>: Add an additional check to validate that port in urlparse does
not go in illegal range and returns None.</li>
<li><a class="reference external" href="http://bugs.python.org/14862">Issue #14862</a>: Add missing names to os.__all__</li>
<li><a class="reference external" href="http://bugs.python.org/14875">Issue #14875</a>: Use float(‘inf’) instead of float(‘1e66666’) in the json module.</li>
<li><a class="reference external" href="http://bugs.python.org/13585">Issue #13585</a>: Added contextlib.ExitStack</li>
<li>PEP 3144, <a class="reference external" href="http://bugs.python.org/14814">Issue #14814</a>: Added the ipaddress module</li>
<li><a class="reference external" href="http://bugs.python.org/14426">Issue #14426</a>: Correct the Date format in Expires attribute of Set-Cookie
Header in Cookie.py.</li>
<li><a class="reference external" href="http://bugs.python.org/14588">Issue #14588</a>: The types module now provide new_class() and prepare_class()
functions to support PEP 3115 compliant dynamic class creation. Patch by
Daniel Urban and Nick Coghlan.</li>
<li><a class="reference external" href="http://bugs.python.org/13152">Issue #13152</a>: Allow to specify a custom tabsize for expanding tabs in
textwrap. Patch by John Feuerstein.</li>
<li><a class="reference external" href="http://bugs.python.org/14721">Issue #14721</a>: Send the correct ‘Content-length: 0’ header when the body is an
empty string ‘’. Initial Patch contributed by Arve Knudsen.</li>
<li><a class="reference external" href="http://bugs.python.org/14072">Issue #14072</a>: Fix parsing of ‘tel’ URIs in urlparse by making the check for
ports stricter.</li>
<li><a class="reference external" href="http://bugs.python.org/9374">Issue #9374</a>: Generic parsing of query and fragment portions of url for any
scheme. Supported both by RFC3986 and RFC2396.</li>
<li><a class="reference external" href="http://bugs.python.org/14798">Issue #14798</a>: Fix the functions in pyclbr to raise an ImportError
when the first part of a dotted name is not a package. Patch by
Xavier de Gaye.</li>
<li><a class="reference external" href="http://bugs.python.org/12098">Issue #12098</a>: multiprocessing on Windows now starts child processes
using the same sys.flags as the current process. Initial patch by
Sergey Mezentsev.</li>
<li><a class="reference external" href="http://bugs.python.org/13031">Issue #13031</a>: Small speed-up for tarfile when unzipping tarfiles.
Patch by Justin Peel.</li>
<li><a class="reference external" href="http://bugs.python.org/14780">Issue #14780</a>: urllib.request.urlopen() now has a <tt class="docutils literal"><span class="pre">cadefault</span></tt> argument
to use the default certificate store. Initial patch by James Oakley.</li>
<li><a class="reference external" href="http://bugs.python.org/14829">Issue #14829</a>: Fix bisect and range() indexing with large indices
(>= 2 ** 32) under 64-bit Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/14732">Issue #14732</a>: The _csv module now uses PEP 3121 module initialization.
Patch by Robin Schreiber.</li>
<li><a class="reference external" href="http://bugs.python.org/14809">Issue #14809</a>: Add HTTP status codes introduced by RFC 6585 to http.server
and http.client. Patch by EungJun Yi.</li>
<li><a class="reference external" href="http://bugs.python.org/14777">Issue #14777</a>: tkinter may return undecoded UTF-8 bytes as a string when
accessing the Tk clipboard. Modify clipboad_get() to first request type
UTF8_STRING when no specific type is requested in an X11 windowing
environment, falling back to the current default type STRING if that fails.
Original patch by Thomas Kluyver.</li>
<li><a class="reference external" href="http://bugs.python.org/14773">Issue #14773</a>: Fix os.fwalk() failing on dangling symlinks.</li>
<li><a class="reference external" href="http://bugs.python.org/12541">Issue #12541</a>: Be lenient with quotes around Realm field of HTTP Basic
Authentation in urllib2.</li>
<li><a class="reference external" href="http://bugs.python.org/14807">Issue #14807</a>: move undocumented tarfile.filemode() to stat.filemode() and add
doc entry. Add tarfile.filemode alias with deprecation warning.</li>
<li><a class="reference external" href="http://bugs.python.org/13815">Issue #13815</a>: TarFile.extractfile() now returns io.BufferedReader objects.</li>
<li><a class="reference external" href="http://bugs.python.org/14532">Issue #14532</a>: Add a secure_compare() helper to the hmac module, to mitigate
timing attacks. Patch by Jon Oberheide.</li>
<li>Add importlib.util.resolve_name().</li>
<li><a class="reference external" href="http://bugs.python.org/14366">Issue #14366</a>: Support lzma compression in zip files.
Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/13959">Issue #13959</a>: Introduce importlib.find_loader() and document
imp.find_module/load_module as deprecated.</li>
<li><a class="reference external" href="http://bugs.python.org/14082">Issue #14082</a>: shutil.copy2() now copies extended attributes, if possible.
Patch by Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/13959">Issue #13959</a>: Make importlib.abc.FileLoader.load_module()/get_filename() and
importlib.machinery.ExtensionFileLoader.load_module() have their single
argument be optional. Allows for the replacement (and thus deprecation) of
imp.load_source()/load_package()/load_compiled().</li>
<li><a class="reference external" href="http://bugs.python.org/13959">Issue #13959</a>: imp.get_suffixes() has been deprecated in favour of the new
attributes on importlib.machinery: SOURCE_SUFFIXES, DEBUG_BYTECODE_SUFFIXES,
OPTIMIZED_BYTECODE_SUFFIXES, BYTECODE_SUFFIXES, and EXTENSION_SUFFIXES. This
led to an indirect deprecation of inspect.getmoduleinfo().</li>
<li><a class="reference external" href="http://bugs.python.org/14662">Issue #14662</a>: Prevent shutil failures on OS X when destination does not
support chflag operations. Patch by Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/14157">Issue #14157</a>: Fix time.strptime failing without a year on February 29th.
Patch by Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/14753">Issue #14753</a>: Make multiprocessing’s handling of negative timeouts
the same as it was in Python 3.2.</li>
<li><a class="reference external" href="http://bugs.python.org/14583">Issue #14583</a>: Fix importlib bug when a package’s __init__.py would first
import one of its modules then raise an error.</li>
<li><a class="reference external" href="http://bugs.python.org/14741">Issue #14741</a>: Fix missing support for Ellipsis (‘...’) in parser module.</li>
<li><a class="reference external" href="http://bugs.python.org/14697">Issue #14697</a>: Fix missing support for set displays and set comprehensions in
parser module.</li>
<li><a class="reference external" href="http://bugs.python.org/14701">Issue #14701</a>: Fix missing support for ‘raise ... from’ in parser module.</li>
<li>Add support for timeouts to the acquire() methods of
multiprocessing’s lock/semaphore/condition proxies.</li>
<li><a class="reference external" href="http://bugs.python.org/13989">Issue #13989</a>: Add support for text mode to gzip.open().</li>
<li><a class="reference external" href="http://bugs.python.org/14127">Issue #14127</a>: The os.stat() result object now provides three additional
fields: st_ctime_ns, st_mtime_ns, and st_atime_ns, providing those times as an
integer with nanosecond resolution. The functions os.utime(), os.lutimes(),
and os.futimes() now accept a new parameter, ns, which accepts mtime and atime
as integers with nanosecond resolution.</li>
<li><a class="reference external" href="http://bugs.python.org/14127">Issue #14127</a> and #10148: shutil.copystat now preserves exact mtime and atime
on filesystems providing nanosecond resolution.</li>
</ul>
</div>
<div class="section" id="id42">
<h3>IDLE<a class="headerlink" href="#id42" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14958">Issue #14958</a>: Change IDLE systax highlighting to recognize all string and
byte literals supported in Python 3.3.</li>
<li><a class="reference external" href="http://bugs.python.org/10997">Issue #10997</a>: Prevent a duplicate entry in IDLE’s “Recent Files” menu.</li>
<li><a class="reference external" href="http://bugs.python.org/14929">Issue #14929</a>: Stop IDLE 3.x from closing on Unicode decode errors when
grepping. Patch by Roger Serwy.</li>
<li><a class="reference external" href="http://bugs.python.org/12510">Issue #12510</a>: Attempting to get invalid tooltip no longer closes IDLE.
Other tooltipss have been corrected or improved and the number of tests
has been tripled. Original patch by Roger Serwy.</li>
</ul>
</div>
<div class="section" id="id43">
<h3>Tools/Demos<a class="headerlink" href="#id43" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14695">Issue #14695</a>: Bring Tools/parser/unparse.py support up to date with
the Python 3.3 Grammar.</li>
</ul>
</div>
<div class="section" id="id44">
<h3>Build<a class="headerlink" href="#id44" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14472">Issue #14472</a>: Update .gitignore. Patch by Matej Cepl.</li>
<li>Upgrade Windows library versions: bzip 1.0.6, OpenSSL 1.0.1c.</li>
<li><a class="reference external" href="http://bugs.python.org/14693">Issue #14693</a>: Under non-Windows platforms, hashlib’s fallback modules are
always compiled, even if OpenSSL is present at build time.</li>
<li><a class="reference external" href="http://bugs.python.org/13210">Issue #13210</a>: Windows build now uses VS2010, ported from VS2008.</li>
</ul>
</div>
<div class="section" id="id45">
<h3>C-API<a class="headerlink" href="#id45" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14705">Issue #14705</a>: The PyArg_Parse() family of functions now support the ‘p’ format
unit, which accepts a “boolean predicate” argument. It converts any Python
value into an integer–0 if it is “false”, and 1 otherwise.</li>
</ul>
</div>
<div class="section" id="id46">
<h3>Documentation<a class="headerlink" href="#id46" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14863">Issue #14863</a>: Update the documentation of os.fdopen() to reflect the
fact that it’s only a thin wrapper around open() anymore.</li>
<li><a class="reference external" href="http://bugs.python.org/14588">Issue #14588</a>: The language reference now accurately documents the Python 3
class definition process. Patch by Nick Coghlan.</li>
<li><a class="reference external" href="http://bugs.python.org/14943">Issue #14943</a>: Correct a default argument value for winreg.OpenKey
and correctly list the argument names in the function’s explanation.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-alpha-3">
<h2>Python 3.3.0 Alpha 3<a class="headerlink" href="#python-3-3-0-alpha-3" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 01-May-2012</em></p>
<div class="section" id="id47">
<h3>Core and Builtins<a class="headerlink" href="#id47" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14699">Issue #14699</a>: Fix calling the classmethod descriptor directly.</li>
<li><a class="reference external" href="http://bugs.python.org/14433">Issue #14433</a>: Prevent msvcrt crash in interactive prompt when stdin is closed.</li>
<li><a class="reference external" href="http://bugs.python.org/14521">Issue #14521</a>: Make result of float(‘nan’) and float(‘-nan’) more consistent
across platforms.</li>
<li><a class="reference external" href="http://bugs.python.org/14646">Issue #14646</a>: __import__() sets __loader__ if the loader did not.</li>
<li><a class="reference external" href="http://bugs.python.org/14605">Issue #14605</a>: No longer have implicit entries in sys.meta_path. If
sys.meta_path is found to be empty, raise ImportWarning.</li>
<li><a class="reference external" href="http://bugs.python.org/14605">Issue #14605</a>: No longer have implicit entries in sys.path_hooks. If
sys.path_hooks is found to be empty, a warning will be raised. None is now
inserted into sys.path_importer_cache if no finder was discovered. This also
means imp.NullImporter is no longer implicitly used.</li>
<li><a class="reference external" href="http://bugs.python.org/13903">Issue #13903</a>: Implement PEP 412. Individual dictionary instances can now share
their keys with other dictionaries. Classes take advantage of this to share
their instance dictionary keys for improved memory and performance.</li>
<li><a class="reference external" href="http://bugs.python.org/11603">Issue #11603</a> (again): Setting __repr__ to __str__ now raises a RuntimeError
when repr() or str() is called on such an object.</li>
<li><a class="reference external" href="http://bugs.python.org/14658">Issue #14658</a>: Fix binding a special method to a builtin implementation of a
special method with a different name.</li>
<li><a class="reference external" href="http://bugs.python.org/14630">Issue #14630</a>: Fix a memory access bug for instances of a subclass of int
with value 0.</li>
<li><a class="reference external" href="http://bugs.python.org/14339">Issue #14339</a>: Speed improvements to bin, oct and hex functions. Patch by
Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/14385">Issue #14385</a>: It is now possible to use a custom type for the __builtins__
namespace, instead of a dict. It can be used for sandboxing for example.
Raise also a NameError instead of ImportError if __build_class__ name if not
found in __builtins__.</li>
<li><a class="reference external" href="http://bugs.python.org/12599">Issue #12599</a>: Be more strict in accepting None compared to a false-like
object for importlib.util.module_for_loader and
importlib.machinery.PathFinder.</li>
<li><a class="reference external" href="http://bugs.python.org/14612">Issue #14612</a>: Fix jumping around with blocks by setting f_lineno.</li>
<li><a class="reference external" href="http://bugs.python.org/14592">Issue #14592</a>: Attempting a relative import w/o __package__ or __name__ set in
globals raises a KeyError.</li>
<li><a class="reference external" href="http://bugs.python.org/14607">Issue #14607</a>: Fix keyword-only arguments which started with <tt class="docutils literal"><span class="pre">__</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/10854">Issue #10854</a>: The ImportError raised when an extension module on Windows
fails to import now uses the new path and name attributes from
<a class="reference external" href="http://bugs.python.org/1559549">Issue #1559549</a>.</li>
<li><a class="reference external" href="http://bugs.python.org/13889">Issue #13889</a>: Check and (if necessary) set FPU control word before calling
any of the dtoa.c string <-> float conversion functions, on MSVC builds of
Python. This fixes issues when embedding Python in a Delphi app.</li>
<li>__import__() now matches PEP 328 and documentation by defaulting ‘index’ to 0
instead of -1 and removing support for negative values.</li>
<li><a class="reference external" href="http://bugs.python.org/2377">Issue #2377</a>: Make importlib the implementation of __import__().</li>
<li><a class="reference external" href="http://bugs.python.org/1559549">Issue #1559549</a>: ImportError now has ‘name’ and ‘path’ attributes that are set
using keyword arguments to its constructor. They are currently not set by
import as they are meant for use by importlib.</li>
<li><a class="reference external" href="http://bugs.python.org/14474">Issue #14474</a>: Save and restore exception state in thread.start_new_thread()
while writing error message if the thread leaves a unhandled exception.</li>
<li><a class="reference external" href="http://bugs.python.org/13019">Issue #13019</a>: Fix potential reference leaks in bytearray.extend(). Patch
by Suman Saha.</li>
</ul>
</div>
<div class="section" id="id48">
<h3>Library<a class="headerlink" href="#id48" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14768">Issue #14768</a>: os.path.expanduser(‘~/a’) doesn’t works correctly when HOME is ‘/’.</li>
<li><a class="reference external" href="http://bugs.python.org/14371">Issue #14371</a>: Support bzip2 in zipfile module. Patch by Serhiy Storchaka.</li>
<li><a class="reference external" href="http://bugs.python.org/13183">Issue #13183</a>: Fix pdb skipping frames after hitting a breakpoint and running
step. Patch by Xavier de Gaye.</li>
<li><a class="reference external" href="http://bugs.python.org/14696">Issue #14696</a>: Fix parser module to understand ‘nonlocal’ declarations.</li>
<li><a class="reference external" href="http://bugs.python.org/10941">Issue #10941</a>: Fix imaplib.Internaldate2tuple to produce correct result near
the DST transition. Patch by Joe Peterson.</li>
<li><a class="reference external" href="http://bugs.python.org/9154">Issue #9154</a>: Fix parser module to understand function annotations.</li>
<li><a class="reference external" href="http://bugs.python.org/6085">Issue #6085</a>: In http.server.py SimpleHTTPServer.address_string returns the
client ip address instead client hostname. Patch by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/14309">Issue #14309</a>: Deprecate time.clock(), use time.perf_counter() or
time.process_time() instead.</li>
<li><a class="reference external" href="http://bugs.python.org/14428">Issue #14428</a>: Implement the PEP 418. Add time.get_clock_info(),
time.perf_counter() and time.process_time() functions, and rename
time.steady() to time.monotonic().</li>
<li><a class="reference external" href="http://bugs.python.org/14646">Issue #14646</a>: importlib.util.module_for_loader() now sets __loader__ and
__package__ (when possible).</li>
<li><a class="reference external" href="http://bugs.python.org/14664">Issue #14664</a>: It is now possible to use @unittest.skip{If,Unless} on a
test class that doesn’t inherit from TestCase (i.e. a mixin).</li>
<li><a class="reference external" href="http://bugs.python.org/4892">Issue #4892</a>: multiprocessing Connections can now be transferred over
multiprocessing Connections. Patch by Richard Oudkerk (sbt).</li>
<li><a class="reference external" href="http://bugs.python.org/14160">Issue #14160</a>: TarFile.extractfile() failed to resolve symbolic links when
the links were not located in an archive subdirectory.</li>
<li><a class="reference external" href="http://bugs.python.org/14638">Issue #14638</a>: pydoc now treats non-string __name__ values as if they
were missing, instead of raising an error.</li>
<li><a class="reference external" href="http://bugs.python.org/13684">Issue #13684</a>: Fix httplib tunnel issue of infinite loops for certain sites
which send EOF without trailing rn.</li>
<li><a class="reference external" href="http://bugs.python.org/14605">Issue #14605</a>: Add importlib.abc.FileLoader, importlib.machinery.(FileFinder,
SourceFileLoader, SourcelessFileLoader, ExtensionFileLoader).</li>
<li><a class="reference external" href="http://bugs.python.org/13959">Issue #13959</a>: imp.cache_from_source()/source_from_cache() now follow
os.path.join()/split() semantics for path manipulation instead of its prior,
custom semantics of caring the right-most path separator forward in path
joining.</li>
<li><a class="reference external" href="http://bugs.python.org/2193">Issue #2193</a>: Allow ”:” character in Cookie NAME values.</li>
<li><a class="reference external" href="http://bugs.python.org/14629">Issue #14629</a>: tokenizer.detect_encoding will specify the filename in the
SyntaxError exception if found at readline.__self__.name.</li>
<li><a class="reference external" href="http://bugs.python.org/14629">Issue #14629</a>: Raise SyntaxError in tokenizer.detect_encoding if the
first two lines have non-UTF-8 characters without an encoding declaration.</li>
<li><a class="reference external" href="http://bugs.python.org/14308">Issue #14308</a>: Fix an exception when a “dummy” thread is in the threading
module’s active list after a fork().</li>
<li><a class="reference external" href="http://bugs.python.org/11750">Issue #11750</a>: The Windows API functions scattered in the _subprocess and
_multiprocessing.win32 modules now live in a single module “_winapi”.
Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/14087">Issue #14087</a>: multiprocessing: add Condition.wait_for(). Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/14538">Issue #14538</a>: HTMLParser can now parse correctly start tags that contain
a bare ‘/’.</li>
<li><a class="reference external" href="http://bugs.python.org/14452">Issue #14452</a>: SysLogHandler no longer inserts a UTF-8 BOM into the message.</li>
<li><a class="reference external" href="http://bugs.python.org/14386">Issue #14386</a>: Expose the dict_proxy internal type as types.MappingProxyType.</li>
<li><a class="reference external" href="http://bugs.python.org/13959">Issue #13959</a>: Make imp.reload() always use a module’s __loader__ to perform
the reload.</li>
<li><a class="reference external" href="http://bugs.python.org/13959">Issue #13959</a>: Add imp.py and rename the built-in module to _imp, allowing for
re-implementing parts of the module in pure Python.</li>
<li><a class="reference external" href="http://bugs.python.org/13496">Issue #13496</a>: Fix potential overflow in bisect.bisect algorithm when applied
to a collection of size > sys.maxsize / 2.</li>
<li>Have importlib take advantage of ImportError’s new ‘name’ and ‘path’
attributes.</li>
<li><a class="reference external" href="http://bugs.python.org/14399">Issue #14399</a>: zipfile now recognizes that the archive has been modified even
if only the comment is changed. In addition, the TypeError that results from
trying to set a non-binary value as a comment is now raised at the time
the comment is set rather than at the time the zipfile is written.</li>
<li>trace.CoverageResults.is_ignored_filename() now ignores any name that starts
with “<” and ends with “>” instead of special-casing “<string>” and
“<doctest ”.</li>
<li><a class="reference external" href="http://bugs.python.org/12537">Issue #12537</a>: The mailbox module no longer depends on knowledge of internal
implementation details of the email package Message object.</li>
<li><a class="reference external" href="http://bugs.python.org/7978">Issue #7978</a>: socketserver now restarts the select() call when EINTR is
returned. This avoids crashing the server loop when a signal is received.
Patch by Jerzy Kozera.</li>
<li><a class="reference external" href="http://bugs.python.org/14522">Issue #14522</a>: Avoid duplicating socket handles in multiprocessing.connection.
Patch by sbt.</li>
<li>Don’t Py_DECREF NULL variable in io.IncrementalNewlineDecoder.</li>
<li><a class="reference external" href="http://bugs.python.org/3033">Issue #3033</a>: Add displayof parameter to tkinter font. Patch by Guilherme Polo.</li>
<li><a class="reference external" href="http://bugs.python.org/14482">Issue #14482</a>: Raise a ValueError, not a NameError, when trying to create
a multiprocessing Client or Listener with an AF_UNIX type address under
Windows. Patch by Popa Claudiu.</li>
<li><a class="reference external" href="http://bugs.python.org/802310">Issue #802310</a>: Generate always unique tkinter font names if not directly passed.</li>
<li><a class="reference external" href="http://bugs.python.org/14151">Issue #14151</a>: Raise a ValueError, not a NameError, when trying to create
a multiprocessing Client or Listener with an AF_PIPE type address under
non-Windows platforms. Patch by Popa Claudiu.</li>
<li><a class="reference external" href="http://bugs.python.org/14493">Issue #14493</a>: Use gvfs-open or xdg-open in webbrowser.</li>
</ul>
</div>
<div class="section" id="id49">
<h3>Build<a class="headerlink" href="#id49" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>“make touch” will now touch generated files that are checked into Mercurial,
after a “hg update” which failed to bring the timestamps into the right order.</li>
</ul>
</div>
<div class="section" id="id50">
<h3>Tests<a class="headerlink" href="#id50" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14026">Issue #14026</a>: In test_cmd_line_script, check that sys.argv is populated
correctly for the various invocation approaches (Patch by Jason Yeo)</li>
<li><a class="reference external" href="http://bugs.python.org/14032">Issue #14032</a>: Fix incorrect variable name in test_cmd_line_script debugging
message (Patch by Jason Yeo)</li>
<li><a class="reference external" href="http://bugs.python.org/14589">Issue #14589</a>: Update certificate chain for sha256.tbs-internet.com, fixing
a test failure in test_ssl.</li>
<li><a class="reference external" href="http://bugs.python.org/14355">Issue #14355</a>: Regrtest now supports the standard unittest test loading, and
will use it if a test file contains no <tt class="xref py py-obj docutils literal"><span class="pre">test_main</span></tt> method.</li>
</ul>
</div>
<div class="section" id="id51">
<h3>IDLE<a class="headerlink" href="#id51" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/8515">Issue #8515</a>: Set __file__ when run file in IDLE.
Initial patch by Bruce Frederiksen.</li>
<li><a class="reference external" href="http://bugs.python.org/14496">Issue #14496</a>: Fix wrong name in idlelib/tabbedpages.py.
Patch by Popa Claudiu.</li>
</ul>
</div>
<div class="section" id="id52">
<h3>Tools / Demos<a class="headerlink" href="#id52" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/3561">Issue #3561</a>: The Windows installer now has an option, off by default, for
placing the Python installation into the system “Path” environment variable.</li>
<li><a class="reference external" href="http://bugs.python.org/13165">Issue #13165</a>: stringbench is now available in the Tools/stringbench folder.
It used to live in its own SVN project.</li>
</ul>
</div>
<div class="section" id="id53">
<h3>C-API<a class="headerlink" href="#id53" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14098">Issue #14098</a>: New functions PyErr_GetExcInfo and PyErr_SetExcInfo.
Patch by Stefan Behnel.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-alpha-2">
<h2>Python 3.3.0 Alpha 2<a class="headerlink" href="#python-3-3-0-alpha-2" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 01-Apr-2012</em></p>
<div class="section" id="id54">
<h3>Core and Builtins<a class="headerlink" href="#id54" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/1683368">Issue #1683368</a>: object.__new__ and object.__init__ raise a TypeError if they
are passed arguments and their complementary method is not overridden.</li>
<li><a class="reference external" href="http://bugs.python.org/14378">Issue #14378</a>: Fix compiling ast.ImportFrom nodes with a “__future__” string as
the module name that was not interned.</li>
<li><a class="reference external" href="http://bugs.python.org/14331">Issue #14331</a>: Use significantly less stack space when importing modules by
allocating path buffers on the heap instead of the stack.</li>
<li><a class="reference external" href="http://bugs.python.org/14334">Issue #14334</a>: Prevent in a segfault in type.__getattribute__ when it was not
passed strings.</li>
<li><a class="reference external" href="http://bugs.python.org/1469629">Issue #1469629</a>: Allow cycles through an object’s __dict__ slot to be
collected. (For example if <tt class="docutils literal"><span class="pre">x.__dict__</span> <span class="pre">is</span> <span class="pre">x</span></tt>).</li>
<li><a class="reference external" href="http://bugs.python.org/14205">Issue #14205</a>: dict lookup raises a RuntimeError if the dict is modified
during a lookup.</li>
<li><a class="reference external" href="http://bugs.python.org/14220">Issue #14220</a>: When a generator is delegating to another iterator with the
yield from syntax, it needs to have its <tt class="docutils literal"><span class="pre">gi_running</span></tt> flag set to True.</li>
<li><a class="reference external" href="http://bugs.python.org/14435">Issue #14435</a>: Remove dedicated block allocator from floatobject.c and rely
on the PyObject_Malloc() api like all other objects.</li>
<li><a class="reference external" href="http://bugs.python.org/14471">Issue #14471</a>: Fix a possible buffer overrun in the winreg module.</li>
<li><a class="reference external" href="http://bugs.python.org/14288">Issue #14288</a>: Allow the serialization of builtin iterators</li>
</ul>
</div>
<div class="section" id="id55">
<h3>Library<a class="headerlink" href="#id55" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14300">Issue #14300</a>: Under Windows, sockets created using socket.dup() now allow
overlapped I/O. Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/13872">Issue #13872</a>: socket.detach() now marks the socket closed (as mirrored
in the socket repr()). Patch by Matt Joiner.</li>
<li><a class="reference external" href="http://bugs.python.org/14406">Issue #14406</a>: Fix a race condition when using <tt class="docutils literal"><span class="pre">concurrent.futures.wait(</span>
<span class="pre">return_when=ALL_COMPLETED)</span></tt>. Patch by Matt Joiner.</li>
<li><a class="reference external" href="http://bugs.python.org/5136">Issue #5136</a>: deprecate old, unused functions from tkinter.</li>
<li><a class="reference external" href="http://bugs.python.org/14416">Issue #14416</a>: syslog now defines the LOG_ODELAY and LOG_AUTHPRIV constants
if they are defined in <syslog.h>.</li>
<li><a class="reference external" href="http://bugs.python.org/14295">Issue #14295</a>: Add unittest.mock</li>
<li><a class="reference external" href="http://bugs.python.org/7652">Issue #7652</a>: Add –with-system-libmpdec option to configure for linking
the _decimal module against an installed libmpdec.</li>
<li><a class="reference external" href="http://bugs.python.org/14380">Issue #14380</a>: MIMEText now defaults to utf-8 when passed non-ASCII unicode
with no charset specified.</li>
<li><a class="reference external" href="http://bugs.python.org/10340">Issue #10340</a>: asyncore - properly handle EINVAL in dispatcher constructor on
OSX; avoid to call handle_connect in case of a disconnected socket which
was not meant to connect.</li>
<li><a class="reference external" href="http://bugs.python.org/14204">Issue #14204</a>: The ssl module now has support for the Next Protocol
Negotiation extension, if available in the underlying OpenSSL library.
Patch by Colin Marc.</li>
<li><a class="reference external" href="http://bugs.python.org/3035">Issue #3035</a>: Unused functions from tkinter are marked as pending deprecated.</li>
<li><a class="reference external" href="http://bugs.python.org/12757">Issue #12757</a>: Fix the skipping of doctests when python is run with -OO so
that it works in unittest’s verbose mode as well as non-verbose mode.</li>
<li><a class="reference external" href="http://bugs.python.org/7652">Issue #7652</a>: Integrate the decimal floating point libmpdec library to speed
up the decimal module. Performance gains of the new C implementation are
between 10x and 100x, depending on the application.</li>
<li><a class="reference external" href="http://bugs.python.org/14269">Issue #14269</a>: SMTPD now conforms to the RFC and requires a HELO command
before MAIL, RCPT, or DATA.</li>
<li><a class="reference external" href="http://bugs.python.org/13694">Issue #13694</a>: asynchronous connect in asyncore.dispatcher does not set addr
attribute.</li>
<li><a class="reference external" href="http://bugs.python.org/14344">Issue #14344</a>: fixed the repr of email.policy objects.</li>
<li><a class="reference external" href="http://bugs.python.org/11686">Issue #11686</a>: Added missing entries to email package __all__ lists
(mostly the new Bytes classes).</li>
<li><a class="reference external" href="http://bugs.python.org/14335">Issue #14335</a>: multiprocessing’s custom Pickler subclass now inherits from
the C-accelerated implementation. Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/10484">Issue #10484</a>: Fix the CGIHTTPServer’s PATH_INFO handling problem.</li>
<li><a class="reference external" href="http://bugs.python.org/11199">Issue #11199</a>: Fix the with urllib which hangs on particular ftp urls.</li>
<li>Improve the memory utilization and speed of functools.lru_cache.</li>
<li><a class="reference external" href="http://bugs.python.org/14222">Issue #14222</a>: Use the new time.steady() function instead of time.time() for
timeout in queue and threading modules to not be affected of system time
update.</li>
<li><a class="reference external" href="http://bugs.python.org/13248">Issue #13248</a>: Remove lib2to3.pytree.Base.get_prefix/set_prefix.</li>
<li><a class="reference external" href="http://bugs.python.org/14234">Issue #14234</a>: CVE-2012-0876: Randomize hashes of xml attributes in the hash
table internal to the pyexpat module’s copy of the expat library to avoid a
denial of service due to hash collisions. Patch by David Malcolm with some
modifications by the expat project.</li>
<li><a class="reference external" href="http://bugs.python.org/12818">Issue #12818</a>: format address no longer needlessly escapes ()s in names when
the name ends up being quoted.</li>
<li><a class="reference external" href="http://bugs.python.org/14062">Issue #14062</a>: BytesGenerator now correctly folds Header objects,
including using linesep when folding.</li>
<li><a class="reference external" href="http://bugs.python.org/13839">Issue #13839</a>: When invoked on the command-line, the pstats module now
accepts several filenames of profile stat files and merges them all.
Patch by Matt Joiner.</li>
<li><a class="reference external" href="http://bugs.python.org/14291">Issue #14291</a>: Email now defaults to utf-8 for non-ASCII unicode headers
instead of raising an error. This fixes a regression relative to 2.7.</li>
<li><a class="reference external" href="http://bugs.python.org/989712">Issue #989712</a>: Support using Tk without a mainloop.</li>
<li><a class="reference external" href="http://bugs.python.org/3835">Issue #3835</a>: Refuse to use unthreaded Tcl in threaded Python.</li>
<li><a class="reference external" href="http://bugs.python.org/2843">Issue #2843</a>: Add new Tk API to Tkinter.</li>
<li><a class="reference external" href="http://bugs.python.org/14184">Issue #14184</a>: Increase the default stack size for secondary threads on
Mac OS X to avoid interpreter crashes when using threads on 10.7.</li>
<li><a class="reference external" href="http://bugs.python.org/14180">Issue #14180</a>: datetime.date.fromtimestamp(),
datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp()
now raise an OSError instead of ValueError if localtime() or gmtime() failed.</li>
<li><a class="reference external" href="http://bugs.python.org/14180">Issue #14180</a>: time.ctime(), gmtime(), time.localtime(),
datetime.date.fromtimestamp(), datetime.datetime.fromtimestamp() and
datetime.datetime.utcfromtimestamp() now raises an OverflowError, instead of
a ValueError, if the timestamp does not fit in time_t.</li>
<li><a class="reference external" href="http://bugs.python.org/14180">Issue #14180</a>: datetime.datetime.fromtimestamp() and
datetime.datetime.utcfromtimestamp() now round microseconds towards zero
instead of rounding to nearest with ties going away from zero.</li>
<li><a class="reference external" href="http://bugs.python.org/10543">Issue #10543</a>: Fix unittest test discovery with Jython bytecode files.</li>
<li><a class="reference external" href="http://bugs.python.org/1178863">Issue #1178863</a>: Separate initialisation from setting when initializing
Tkinter.Variables; harmonize exceptions to ValueError; only delete variables
that have not been deleted; assert that variable names are strings.</li>
<li><a class="reference external" href="http://bugs.python.org/14104">Issue #14104</a>: Implement time.monotonic() on Mac OS X, patch written by
Nicholas Riley.</li>
<li><a class="reference external" href="http://bugs.python.org/13394">Issue #13394</a>: the aifc module now uses warnings.warn() to signal warnings.</li>
<li><a class="reference external" href="http://bugs.python.org/14252">Issue #14252</a>: Fix subprocess.Popen.terminate() to not raise an error under
Windows when the child process has already exited.</li>
<li><a class="reference external" href="http://bugs.python.org/14223">Issue #14223</a>: curses.addch() is no more limited to the range 0-255 when the
Python curses is not linked to libncursesw. It was a regression introduced
in Python 3.3a1.</li>
<li><a class="reference external" href="http://bugs.python.org/14168">Issue #14168</a>: Check for presence of Element._attrs in minidom before
accessing it.</li>
<li><a class="reference external" href="http://bugs.python.org/12328">Issue #12328</a>: Fix multiprocessing’s use of overlapped I/O on Windows.
Also, add a multiprocessing.connection.wait(rlist, timeout=None) function
for polling multiple objects at once. Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/14007">Issue #14007</a>: Accept incomplete TreeBuilder objects (missing start, end,
data or close method) for the Python implementation as well.
Drop the no-op TreeBuilder().xml() method from the C implementation.</li>
<li><a class="reference external" href="http://bugs.python.org/14210">Issue #14210</a>: pdb now has tab-completion not only for command names, but
also for their arguments, wherever possible.</li>
<li><a class="reference external" href="http://bugs.python.org/14310">Issue #14310</a>: Sockets can now be with other processes on Windows using
the api socket.socket.share() and socket.fromshare().</li>
<li><a class="reference external" href="http://bugs.python.org/10576">Issue #10576</a>: The gc module now has a ‘callbacks’ member that will get
called when garbage collection takes place.</li>
</ul>
</div>
<div class="section" id="id56">
<h3>Build<a class="headerlink" href="#id56" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14557">Issue #14557</a>: Fix extensions build on HP-UX. Patch by Adi Roiban.</li>
<li><a class="reference external" href="http://bugs.python.org/14387">Issue #14387</a>: Do not include accu.h from Python.h.</li>
<li><a class="reference external" href="http://bugs.python.org/14359">Issue #14359</a>: Only use O_CLOEXEC in _posixmodule.c if it is defined.
Based on patch from Hervé Coatanhay.</li>
<li><a class="reference external" href="http://bugs.python.org/14321">Issue #14321</a>: Do not run pgen during the build if files are up to date.</li>
</ul>
</div>
<div class="section" id="id57">
<h3>Documentation<a class="headerlink" href="#id57" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14034">Issue #14034</a>: added the argparse tutorial.</li>
<li><a class="reference external" href="http://bugs.python.org/14324">Issue #14324</a>: Fix configure tests for cross builds.</li>
<li><a class="reference external" href="http://bugs.python.org/14327">Issue #14327</a>: Call AC_CANONICAL_HOST in configure.ac and check in
config.{guess,sub}. Don’t use uname calls for cross builds.</li>
</ul>
</div>
<div class="section" id="id58">
<h3>Extension Modules<a class="headerlink" href="#id58" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/9041">Issue #9041</a>: An issue in ctypes.c_longdouble, ctypes.c_double, and
ctypes.c_float that caused an incorrect exception to be returned in the
case of overflow has been fixed.</li>
<li><a class="reference external" href="http://bugs.python.org/14212">Issue #14212</a>: The re module didn’t retain a reference to buffers it was
scanning, resulting in segfaults.</li>
<li><a class="reference external" href="http://bugs.python.org/14259">Issue #14259</a>: The finditer() method of re objects did not take any
keyword arguments, contrary to the documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/10142">Issue #10142</a>: Support for SEEK_HOLE/SEEK_DATA (for example, under ZFS).</li>
</ul>
</div>
<div class="section" id="id59">
<h3>Tests<a class="headerlink" href="#id59" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14442">Issue #14442</a>: Add missing errno import in test_smtplib.</li>
<li><a class="reference external" href="http://bugs.python.org/8315">Issue #8315</a>: (partial fix) python -m unittest test.test_email now works.</li>
</ul>
</div>
</div>
<div class="section" id="python-3-3-0-alpha-1">
<h2>Python 3.3.0 Alpha 1<a class="headerlink" href="#python-3-3-0-alpha-1" title="Permalink to this headline">¶</a></h2>
<p><em>Release date: 05-Mar-2012</em></p>
<div class="section" id="id60">
<h3>Core and Builtins<a class="headerlink" href="#id60" title="Permalink to this headline">¶</a></h3>
<ul>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/14172">Issue #14172</a>: Fix reference leak when marshalling a buffer-like object
(other than a bytes object).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13521">Issue #13521</a>: dict.setdefault() now does only one lookup for the given key,
making it “atomic” for many purposes. Patch by Filip Gruszczyński.</p>
</li>
<li><p class="first">PEP 409, <a class="reference external" href="http://bugs.python.org/6210">Issue #6210</a>: “raise X from None” is now supported as a means of
suppressing the display of the chained exception context. The chained
context still remains available as the __context__ attribute.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10181">Issue #10181</a>: New memoryview implementation fixes multiple ownership
and lifetime issues of dynamically allocated Py_buffer members (#9990)
as well as crashes (#8305, #7433). Many new features have been added
(See whatsnew/3.3), and the documentation has been updated extensively.
The ndarray test object from _testbuffer.c implements all aspects of
PEP-3118, so further development towards the complete implementation
of the PEP can proceed in a test-driven manner.</p>
<p>Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review
and many ideas.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12834">Issue #12834</a>: Fix incorrect results of memoryview.tobytes() for
non-contiguous arrays.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/5231">Issue #5231</a>: Introduce memoryview.cast() method that allows changing
format and shape without making a copy of the underlying memory.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/14084">Issue #14084</a>: Fix a file descriptor leak when importing a module with a
bad encoding.</p>
</li>
<li><p class="first">Upgrade Unicode data to Unicode 6.1.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/14040">Issue #14040</a>: Remove rarely used file name suffixes for C extensions
(under POSIX mainly).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/14051">Issue #14051</a>: Allow arbitrary attributes to be set of classmethod and
staticmethod.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13703">Issue #13703</a>: oCERT-2011-003: Randomize hashes of str and bytes to protect
against denial of service attacks due to hash collisions within the dict and
set types. Patch by David Malcolm, based on work by Victor Stinner.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13020">Issue #13020</a>: Fix a reference leak when allocating a structsequence object
fails. Patch by Suman Saha.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13908">Issue #13908</a>: Ready types returned from PyType_FromSpec.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11235">Issue #11235</a>: Fix OverflowError when trying to import a source file whose
modification time doesn’t fit in a 32-bit timestamp.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12705">Issue #12705</a>: A SyntaxError exception is now raised when attempting to
compile multiple statements as a single interactive statement.</p>
</li>
<li><p class="first">Fix the builtin module initialization code to store the init function for
future reinitialization.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/8052">Issue #8052</a>: The posix subprocess module would take a long time closing
all possible file descriptors in the child process rather than just open
file descriptors. It now closes only the open fds if possible for the
default close_fds=True behavior.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13629">Issue #13629</a>: Renumber the tokens in token.h so that they match the indexes
into _PyParser_TokenNames.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13752">Issue #13752</a>: Add a casefold() method to str.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13761">Issue #13761</a>: Add a “flush” keyword argument to the print() function,
used to ensure flushing the output stream.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13645">Issue #13645</a>: pyc files now contain the size of the corresponding source
code, to avoid timestamp collisions (especially on filesystems with a low
timestamp resolution) when checking for freshness of the bytecode.</p>
</li>
<li><p class="first">PEP 380, <a class="reference external" href="http://bugs.python.org/11682">Issue #11682</a>: Add “yield from <x>” to support easy delegation to
subgenerators (initial patch by Greg Ewing, integration into 3.3 by
Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan)</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13748">Issue #13748</a>: Raw bytes literals can now be written with the <tt class="docutils literal"><span class="pre">rb</span></tt> prefix
as well as <tt class="docutils literal"><span class="pre">br</span></tt>.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12736">Issue #12736</a>: Use full unicode case mappings for upper, lower, and title case.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12760">Issue #12760</a>: Add a create mode to open(). Patch by David Townshend.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13738">Issue #13738</a>: Simplify implementation of bytes.lower() and bytes.upper().</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13577">Issue #13577</a>: Built-in methods and functions now have a __qualname__.
Patch by sbt.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/6695">Issue #6695</a>: Full garbage collection runs now clear the freelist of set
objects. Initial patch by Matthias Troffaes.</p>
</li>
<li><p class="first">Fix OSError.__init__ and OSError.__new__ so that each of them can be
overriden and take additional arguments (followup to <a class="reference external" href="http://bugs.python.org/12555">issue #12555</a>).</p>
</li>
<li><p class="first">Fix the fix for <a class="reference external" href="http://bugs.python.org/12149">issue #12149</a>: it was incorrect, although it had the side
effect of appearing to resolve the issue. Thanks to Mark Shannon for
noticing.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13505">Issue #13505</a>: Pickle bytes objects in a way that is compatible with
Python 2 when using protocols <= 2.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11147">Issue #11147</a>: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER. (Fix
given by Campbell Barton).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13503">Issue #13503</a>: Use a more efficient reduction format for bytearrays with
pickle protocol >= 3. The old reduction format is kept with older protocols
in order to allow unpickling under Python 2. Patch by Irmen de Jong.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/7111">Issue #7111</a>: Python can now be run without a stdin, stdout or stderr
stream. It was already the case with Python 2. However, the corresponding
sys module entries are now set to None (instead of an unusable file object).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11849">Issue #11849</a>: Ensure that free()d memory arenas are really released
on POSIX systems supporting anonymous memory mappings. Patch by
Charles-François Natali.</p>
</li>
<li><p class="first">PEP 3155 / <a class="reference external" href="http://bugs.python.org/13448">issue #13448</a>: Qualified name for classes and functions.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13436">Issue #13436</a>: Fix a bogus error message when an AST object was passed
an invalid integer value.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13411">Issue #13411</a>: memoryview objects are now hashable when the underlying
object is hashable.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13338">Issue #13338</a>: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER
to allow compiling extension modules with -Wswitch-enum on gcc.
Initial patch by Floris Bruynooghe.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10227">Issue #10227</a>: Add an allocation cache for a single slice object. Patch by
Stefan Behnel.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13393">Issue #13393</a>: BufferedReader.read1() now asks the full requested size to
the raw stream instead of limiting itself to the buffer size.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13392">Issue #13392</a>: Writing a pyc file should now be atomic under Windows as well.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13333">Issue #13333</a>: The UTF-7 decoder now accepts lone surrogates (the encoder
already accepts them).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13389">Issue #13389</a>: Full garbage collection passes now clear the freelists for
list and dict objects. They already cleared other freelists in the
interpreter.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13327">Issue #13327</a>: Remove the need for an explicit None as the second argument
to os.utime, os.lutimes, os.futimes, os.futimens, os.futimesat, in
order to update to the current time. Also added keyword argument
handling to os.utimensat in order to remove the need for explicit None.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13350">Issue #13350</a>: Simplify some C code by replacing most usages of
PyUnicode_Format by PyUnicode_FromFormat.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13342">Issue #13342</a>: input() used to ignore sys.stdin’s and sys.stdout’s unicode
error handler in interactive mode (when calling into PyOS_Readline()).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9896">Issue #9896</a>: Add start, stop, and step attributes to range objects.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13343">Issue #13343</a>: Fix a SystemError when a lambda expression uses a global
variable in the default value of a keyword-only argument: <tt class="docutils literal"><span class="pre">lambda</span> <span class="pre">*,</span>
<span class="pre">arg=GLOBAL_NAME:</span> <span class="pre">None</span></tt></p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12797">Issue #12797</a>: Added custom opener parameter to builtin open() and
FileIO.open().</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10519">Issue #10519</a>: Avoid unnecessary recursive function calls in
setobject.c.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10363">Issue #10363</a>: Deallocate global locks in Py_Finalize().</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13018">Issue #13018</a>: Fix reference leaks in error paths in dictobject.c.
Patch by Suman Saha.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13201">Issue #13201</a>: Define ‘==’ and ‘!=’ to compare range objects based on
the sequence of values they define (instead of comparing based on
object identity).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/1294232">Issue #1294232</a>: In a few cases involving metaclass inheritance, the
interpreter would sometimes invoke the wrong metaclass when building a new
class object. These cases now behave correctly. Patch by Daniel Urban.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12753">Issue #12753</a>: Add support for Unicode name aliases and named sequences.
Both <tt class="docutils literal"><span class="pre">unicodedata.lookup()</span></tt> and ‘N{...}’ now resolve aliases,
and <tt class="docutils literal"><span class="pre">unicodedata.lookup()</span></tt> resolves named sequences too.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12170">Issue #12170</a>: The count(), find(), rfind(), index() and rindex() methods
of bytes and bytearray objects now accept an integer between 0 and 255
as their first argument. Patch by Petri Lehtinen.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12604">Issue #12604</a>: VTRACE macro expanded to no-op in _sre.c to avoid compiler
warnings. Patch by Josh Triplett and Petri Lehtinen.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12281">Issue #12281</a>: Rewrite the MBCS codec to handle correctly replace and ignore
error handlers on all Windows versions. The MBCS codec is now supporting all
error handlers, instead of only replace to encode and ignore to decode.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13188">Issue #13188</a>: When called without an explicit traceback argument,
generator.throw() now gets the traceback from the passed exception’s
<tt class="docutils literal"><span class="pre">__traceback__</span></tt> attribute. Patch by Petri Lehtinen.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13146">Issue #13146</a>: Writing a pyc file is now atomic under POSIX.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/7833">Issue #7833</a>: Extension modules built using distutils on Windows will no
longer include a “manifest” to prevent them failing at import time in some
embedded situations.</p>
</li>
<li><p class="first">PEP 3151 / <a class="reference external" href="http://bugs.python.org/12555">issue #12555</a>: reworking the OS and IO exception hierarchy.</p>
</li>
<li><p class="first">Add internal API for static strings (_Py_identifier et al.).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13063">Issue #13063</a>: the Windows error ERROR_NO_DATA (numbered 232 and described
as “The pipe is being closed”) is now mapped to POSIX errno EPIPE
(previously EINVAL).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12911">Issue #12911</a>: Fix memory consumption when calculating the repr() of huge
tuples or lists.</p>
</li>
<li><p class="first">PEP 393: flexible string representation. Thanks to Torsten Becker for the
initial implementation, and Victor Stinner for various bug fixes.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/14081">Issue #14081</a>: The ‘sep’ and ‘maxsplit’ parameter to str.split, bytes.split,
and bytearray.split may now be passed as keyword arguments.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13012">Issue #13012</a>: The ‘keepends’ parameter to str.splitlines may now be passed
as a keyword argument: “my_string.splitlines(keepends=True)”. The same
change also applies to bytes.splitlines and bytearray.splitlines.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/7732">Issue #7732</a>: Don’t open a directory as a file anymore while importing a
module. Ignore the direcotry if its name matchs the module name (e.g.
“__init__.py”) and raise a ImportError instead.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13021">Issue #13021</a>: Missing decref on an error path. Thanks to Suman Saha for
finding the bug and providing a patch.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12973">Issue #12973</a>: Fix overflow checks that relied on undefined behaviour in
list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These bugs
caused test failures with recent versions of Clang.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12904">Issue #12904</a>: os.utime, os.futimes, os.lutimes, and os.futimesat now write
atime and mtime with nanosecond precision on modern POSIX platforms.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12802">Issue #12802</a>: the Windows error ERROR_DIRECTORY (numbered 267) is now
mapped to POSIX errno ENOTDIR (previously EINVAL).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9200">Issue #9200</a>: The str.is* methods now work with strings that contain non-BMP
characters even in narrow Unicode builds.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12791">Issue #12791</a>: Break reference cycles early when a generator exits with
an exception.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12773">Issue #12773</a>: Make __doc__ mutable on user-defined classes.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12766">Issue #12766</a>: Raise a ValueError when creating a class with a class variable
that conflicts with a name in __slots__.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12266">Issue #12266</a>: Fix str.capitalize() to correctly uppercase/lowercase
titlecased and cased non-letter characters.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12732">Issue #12732</a>: In narrow unicode builds, allow Unicode identifiers which fall
outside the BMP.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12575">Issue #12575</a>: Validate user-generated AST before it is compiled.</p>
</li>
<li><p class="first">Make type(None), type(Ellipsis), and type(NotImplemented) callable. They
return the respective singleton instances.</p>
</li>
<li><p class="first">Forbid summing bytes with sum().</p>
</li>
<li><p class="first">Verify the types of AST strings and identifiers provided by the user before
compiling them.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12647">Issue #12647</a>: The None object now has a __bool__() method that returns False.
Formerly, bool(None) returned False only because of special case logic
in PyObject_IsTrue().</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12579">Issue #12579</a>: str.format_map() now raises a ValueError if used on a
format string that contains positional fields. Initial patch by
Julian Berman.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10271">Issue #10271</a>: Allow warnings.showwarning() be any callable.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11627">Issue #11627</a>: Fix segfault when __new__ on a exception returns a
non-exception class.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12149">Issue #12149</a>: Update the method cache after a type’s dictionary gets
cleared by the garbage collector. This fixes a segfault when an instance
and its type get caught in a reference cycle, and the instance’s
deallocator calls one of the methods on the type (e.g. when subclassing
IOBase). Diagnosis and patch by Davide Rizzo.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9611">Issue #9611</a>, #9015: FileIO.read() clamps the length to INT_MAX on Windows.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9642">Issue #9642</a>: Uniformize the tests on the availability of the mbcs codec, add
a new HAVE_MBCS define.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9642">Issue #9642</a>: Fix filesystem encoding initialization: use the ANSI code page
on Windows if the mbcs codec is not available, and fail with a fatal error if
we cannot get the locale encoding (if nl_langinfo(CODESET) is not available)
instead of using UTF-8.</p>
</li>
<li><p class="first">When a generator yields, do not retain the caller’s exception state on the
generator.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12475">Issue #12475</a>: Prevent generators from leaking their exception state into the
caller’s frame as they return for the last time.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12291">Issue #12291</a>: You can now load multiple marshalled objects from a stream,
with other data interleaved between marshalled objects.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12356">Issue #12356</a>: When required positional or keyword-only arguments are not
given, produce a informative error message which includes the name(s) of the
missing arguments.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12370">Issue #12370</a>: Fix super with no arguments when __class__ is overriden in the
class body.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12084">Issue #12084</a>: os.stat on Windows now works properly with relative symbolic
links when called from any directory.</p>
</li>
<li><p class="first">Loosen type restrictions on the __dir__ method. __dir__ can now return any
sequence, which will be converted to a list and sorted by dir().</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12265">Issue #12265</a>: Make error messages produced by passing an invalid set of
arguments to a function more informative.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12225">Issue #12225</a>: Still allow Python to build if Python is not in its hg repo or
mercurial is not installed.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/1195">Issue #1195</a>: my_fgets() now always clears errors before calling fgets(). Fix
the following case: sys.stdin.read() stopped with CTRL+d (end of file),
raw_input() interrupted by CTRL+c.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12216">Issue #12216</a>: Allow unexpected EOF errors to happen on any line of the file.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12199">Issue #12199</a>: The TryExcept and TryFinally and AST nodes have been unified
into a Try node.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9670">Issue #9670</a>: Increase the default stack size for secondary threads on
Mac OS X and FreeBSD to reduce the chances of a crash instead of a
“maximum recursion depth” RuntimeError exception.
(patch by Ronald Oussoren)</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12106">Issue #12106</a>: The use of the multiple-with shorthand syntax is now reflected
in the AST.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12190">Issue #12190</a>: Try to use the same filename object when compiling unmarshalling
a code objects in the same file.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12166">Issue #12166</a>: Move implementations of dir() specialized for various types into
the __dir__() methods of those types.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/5715">Issue #5715</a>: In socketserver, close the server socket in the child process.</p>
</li>
<li><p class="first">Correct lookup of __dir__ on objects. Among other things, this causes errors
besides AttributeError found on lookup to be propagated.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12060">Issue #12060</a>: Use sig_atomic_t type and volatile keyword in the signal
module. Patch written by Charles-François Natali.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/1746656">Issue #1746656</a>: Added the if_nameindex, if_indextoname, if_nametoindex
methods to the socket module.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12044">Issue #12044</a>: Fixed subprocess.Popen when used as a context manager to
wait for the process to end when exiting the context to avoid unintentionally
leaving zombie processes around.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/1195">Issue #1195</a>: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
clear the end-of-file indicator after CTRL+d.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/1856">Issue #1856</a>: Avoid crashes and lockups when daemon threads run while the
interpreter is shutting down; instead, these threads are now killed when
they try to take the GIL.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9756">Issue #9756</a>: When calling a method descriptor or a slot wrapper descriptor,
the check of the object type doesn’t read the __class__ attribute anymore.
Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
str type). Patch written by Andreas Stührk.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10517">Issue #10517</a>: After fork(), reinitialize the TLS used by the PyGILState_*
APIs, to avoid a crash with the pthread implementation in RHEL 5. Patch
by Charles-François Natali.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10914">Issue #10914</a>: Initialize correctly the filesystem codec when creating a new
subinterpreter to fix a bootstrap issue with codecs implemented in Python, as
the ISO-8859-15 codec.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11918">Issue #11918</a>: OS/2 and VMS are no more supported because of the lack of
maintainer.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/6780">Issue #6780</a>: fix starts/endswith error message to mention that tuples are
accepted too.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/5057">Issue #5057</a>: fix a bug in the peepholer that led to non-portable pyc files
between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP
chars (e.g. “U00012345”[0]).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11845">Issue #11845</a>: Fix typo in rangeobject.c that caused a crash in
compute_slice_indices. Patch by Daniel Urban.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/5673">Issue #5673</a>: Added a <tt class="xref py py-obj docutils literal"><span class="pre">timeout</span></tt> keyword argument to subprocess.Popen.wait,
subprocess.Popen.communicated, subprocess.call, subprocess.check_call, and
subprocess.check_output. If the blocking operation takes more than <tt class="xref py py-obj docutils literal"><span class="pre">timeout</span></tt>
seconds, the <a class="reference internal" href="../library/subprocess.html#subprocess.TimeoutExpired" title="subprocess.TimeoutExpired"><tt class="xref py py-obj docutils literal"><span class="pre">subprocess.TimeoutExpired</span></tt></a> exception is raised.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11650">Issue #11650</a>: PyOS_StdioReadline() retries fgets() if it was interrupted
(EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
written by Charles-Francois Natali.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9319">Issue #9319</a>: Include the filename in “Non-UTF8 code ...” syntax error.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10785">Issue #10785</a>: Store the filename as Unicode in the Python parser.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11619">Issue #11619</a>: _PyImport_LoadDynamicModule() doesn’t encode the path to bytes
on Windows.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10998">Issue #10998</a>: Remove mentions of -Q, sys.flags.division_warning and
Py_DivisionWarningFlag left over from Python 2.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11244">Issue #11244</a>: Remove an unnecessary peepholer check that was preventing
negative zeros from being constant-folded properly.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11395">Issue #11395</a>: io.FileIO().write() clamps the data length to 32,767 bytes on
Windows if the file is a TTY to workaround a Windows bug. The Windows console
returns an error (12: not enough space error) on writing into stdout if
stdout mode is binary and the length is greater than 66,000 bytes (or less,
depending on heap usage).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11320">Issue #11320</a>: fix bogus memory management in Modules/getpath.c, leading to
a possible crash when calling Py_SetPath().</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11432">Issue #11432</a>: A bug was introduced in subprocess.Popen on posix systems with
3.2.0 where the stdout or stderr file descriptor being the same as the stdin
file descriptor would raise an exception. webbrowser.open would fail. fixed.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/9856">Issue #9856</a>: Change object.__format__ with a non-empty format string
to be a DeprecationWarning. In 3.2 it was a PendingDeprecationWarning.
In 3.4 it will be a TypeError.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11244">Issue #11244</a>: The peephole optimizer is now able to constant-fold
arbitrarily complex expressions. This also fixes a 3.2 regression where
operations involving negative numbers were not constant-folded.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11450">Issue #11450</a>: Don’t truncate hg version info in Py_GetBuildInfo() when
there are many tags (e.g. when using mq). Patch by Nadeem Vawda.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11335">Issue #11335</a>: Fixed a memory leak in list.sort when the key function
throws an exception.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/8923">Issue #8923</a>: When a string is encoded to UTF-8 in strict mode, the result is
cached into the object. Examples: str.encode(), str.encode(‘utf-8’),
PyUnicode_AsUTF8String() and PyUnicode_AsEncodedString(unicode, “utf-8”,
NULL).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10829">Issue #10829</a>: Refactor PyUnicode_FromFormat(), use the same function to parse
the format string in the 3 steps, fix crashs on invalid format strings.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/13007">Issue #13007</a>: whichdb should recognize gdbm 1.9 magic numbers.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11286">Issue #11286</a>: Raise a ValueError from calling PyMemoryView_FromBuffer with
a buffer struct having a NULL data pointer.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11272">Issue #11272</a>: On Windows, input() strips ‘r’ (and not only ‘n’), and
sys.stdin uses universal newline (replace ‘rn’ by ‘n’).</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11828">Issue #11828</a>: startswith and endswith now accept None as slice index.
Patch by Torsten Becker.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11168">Issue #11168</a>: Remove filename debug variable from PyEval_EvalFrameEx().
It encoded the Unicode filename to UTF-8, but the encoding fails on
undecodable filename (on surrogate characters) which raises an unexpected
UnicodeEncodeError on recursion limit.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11187">Issue #11187</a>: Remove bootstrap code (use ASCII) of
PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the
locale encoding) in PyUnicode_EncodeFSDefault().</p>
</li>
<li><p class="first">Check for NULL result in PyType_FromSpec.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/10516">Issue #10516</a>: New copy() and clear() methods for lists and bytearrays.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/11386">Issue #11386</a>: bytearray.pop() now throws IndexError when the bytearray is
empty, instead of OverflowError.</p>
</li>
<li><p class="first"><a class="reference external" href="http://bugs.python.org/12380">Issue #12380</a>: The rjust, ljust and center methods of bytes and bytearray
now accept a bytearray argument.</p>
</li>
</ul>
</div>
<div class="section" id="id61">
<h3>Library<a class="headerlink" href="#id61" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14195">Issue #14195</a>: An issue that caused weakref.WeakSet instances to incorrectly
return True for a WeakSet instance ‘a’ in both ‘a < a’ and ‘a > a’ has been
fixed.</li>
<li><a class="reference external" href="http://bugs.python.org/14166">Issue #14166</a>: Pickler objects now have an optional <tt class="docutils literal"><span class="pre">dispatch_table</span></tt>
attribute which allows to set custom per-pickler reduction functions.
Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/14177">Issue #14177</a>: marshal.loads() now raises TypeError when given an unicode
string. Patch by Guilherme Gonçalves.</li>
<li><a class="reference external" href="http://bugs.python.org/13550">Issue #13550</a>: Remove the debug machinery from the threading module: remove
verbose arguments from all threading classes and functions.</li>
<li><a class="reference external" href="http://bugs.python.org/14159">Issue #14159</a>: Fix the len() of weak containers (WeakSet, WeakKeyDictionary,
WeakValueDictionary) to return a better approximation when some objects
are dead or dying. Moreover, the implementation is now O(1) rather than
O(n).</li>
<li><a class="reference external" href="http://bugs.python.org/11841">Issue #11841</a>: Fix comparison bug with ‘rc’ versions in packaging.version.
Patch by Filip Gruszczyński.</li>
<li><a class="reference external" href="http://bugs.python.org/6884">Issue #6884</a>: Fix long-standing bugs with MANIFEST.in parsing in distutils
on Windows. Also fixed in packaging.</li>
<li><a class="reference external" href="http://bugs.python.org/8033">Issue #8033</a>: sqlite3: Fix 64-bit integer handling in user functions
on 32-bit architectures. Initial patch by Philippe Devalkeneer.</li>
<li>HTMLParser is now able to handle slashes in the start tag.</li>
<li><a class="reference external" href="http://bugs.python.org/13641">Issue #13641</a>: Decoding functions in the base64 module now accept ASCII-only
unicode strings. Patch by Catalin Iacob.</li>
<li><a class="reference external" href="http://bugs.python.org/14043">Issue #14043</a>: Speed up importlib’s _FileFinder by at least 8x, and add a
new importlib.invalidate_caches() function.</li>
<li><a class="reference external" href="http://bugs.python.org/14001">Issue #14001</a>: CVE-2012-0845: xmlrpc: Fix an endless loop in
SimpleXMLRPCServer upon malformed POST request.</li>
<li><a class="reference external" href="http://bugs.python.org/13961">Issue #13961</a>: Move importlib over to using os.replace() for atomic renaming.</li>
<li>Do away with ambiguous level values (as suggested by PEP 328) in
importlib.__import__() by raising ValueError when level < 0.</li>
<li><a class="reference external" href="http://bugs.python.org/2489">Issue #2489</a>: pty.spawn could consume 100% cpu when it encountered an EOF.</li>
<li><a class="reference external" href="http://bugs.python.org/13014">Issue #13014</a>: Fix a possible reference leak in SSLSocket.getpeercert().</li>
<li><a class="reference external" href="http://bugs.python.org/13777">Issue #13777</a>: Add PF_SYSTEM sockets on OS X.
Patch by Michael Goderbauer.</li>
<li><a class="reference external" href="http://bugs.python.org/13015">Issue #13015</a>: Fix a possible reference leak in defaultdict.__repr__.
Patch by Suman Saha.</li>
<li><a class="reference external" href="http://bugs.python.org/1326113">Issue #1326113</a>: distutils’ and packaging’s build_ext commands option now
correctly parses multiple values (separated by whitespace or commas) given
to their –libraries option.</li>
<li><a class="reference external" href="http://bugs.python.org/10287">Issue #10287</a>: nntplib now queries the server’s CAPABILITIES first before
sending MODE READER, and only sends it if not already in READER mode.
Patch by Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/13993">Issue #13993</a>: HTMLParser is now able to handle broken end tags when
strict=False.</li>
<li><a class="reference external" href="http://bugs.python.org/13930">Issue #13930</a>: lib2to3 now supports writing converted output files to another
directory tree as well as copying unchanged files and altering the file
suffix.</li>
<li><a class="reference external" href="http://bugs.python.org/9750">Issue #9750</a>: Fix sqlite3.Connection.iterdump on tables and fields
with a name that is a keyword or contains quotes. Patch by Marko
Kohtala.</li>
<li><a class="reference external" href="http://bugs.python.org/10287">Issue #10287</a>: nntplib now queries the server’s CAPABILITIES again after
authenticating (since the result may change, according to RFC 4643).
Patch by Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/13590">Issue #13590</a>: On OS X 10.7 and 10.6 with Xcode 4.2, building
Distutils-based packages with C extension modules may fail because
Apple has removed gcc-4.2, the version used to build python.org
64-bit/32-bit Pythons. If the user does not explicitly override
the default C compiler by setting the CC environment variable,
Distutils will now attempt to compile extension modules with clang
if gcc-4.2 is required but not found. Also as a convenience, if
the user does explicitly set CC, substitute its value as the default
compiler in the Distutils LDSHARED configuration variable for OS X.
(Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u
SDK, neither of which are available in Xcode 4. This change does not
attempt to override settings to support their use with Xcode 4.)</li>
<li><a class="reference external" href="http://bugs.python.org/13960">Issue #13960</a>: HTMLParser is now able to handle broken comments when
strict=False.</li>
<li>When ‘’ is a path (e.g. in sys.path), make sure __file__ uses the current
working directory instead of ‘’ in importlib.</li>
<li><a class="reference external" href="http://bugs.python.org/13609">Issue #13609</a>: Add two functions to query the terminal size:
os.get_terminal_size (low level) and shutil.get_terminal_size (high level).
Patch by Zbigniew Jędrzejewski-Szmek.</li>
<li><a class="reference external" href="http://bugs.python.org/13845">Issue #13845</a>: On Windows, time.time() now uses GetSystemTimeAsFileTime()
instead of ftime() to have a resolution of 100 ns instead of 1 ms (the clock
accuracy is between 0.5 ms and 15 ms).</li>
<li><a class="reference external" href="http://bugs.python.org/13846">Issue #13846</a>: Add time.monotonic(), monotonic clock.</li>
<li><a class="reference external" href="http://bugs.python.org/8184">Issue #8184</a>: multiprocessing: On Windows, don’t set SO_REUSEADDR on
Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to
make sure two listeners can’t bind to the same socket/pipe (or any existing
socket/pipe).</li>
<li><a class="reference external" href="http://bugs.python.org/10811">Issue #10811</a>: Fix recursive usage of cursors. Instead of crashing,
raise a ProgrammingError now.</li>
<li><a class="reference external" href="http://bugs.python.org/13734">Issue #13734</a>: Add os.fwalk(), a directory walking function yielding file
descriptors.</li>
<li><a class="reference external" href="http://bugs.python.org/2945">Issue #2945</a>: Make the distutils upload command aware of bdist_rpm products.</li>
<li><a class="reference external" href="http://bugs.python.org/13712">Issue #13712</a>: pysetup create should not convert package_data to extra_files.</li>
<li><a class="reference external" href="http://bugs.python.org/11805">Issue #11805</a>: package_data in setup.cfg should allow more than one value.</li>
<li><a class="reference external" href="http://bugs.python.org/13676">Issue #13676</a>: Handle strings with embedded zeros correctly in sqlite3.</li>
<li><a class="reference external" href="http://bugs.python.org/8828">Issue #8828</a>: Add new function os.replace(), for cross-platform renaming
with overwriting.</li>
<li><a class="reference external" href="http://bugs.python.org/13848">Issue #13848</a>: open() and the FileIO constructor now check for NUL
characters in the file name. Patch by Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/13806">Issue #13806</a>: The size check in audioop decompression functions was too
strict and could reject valid compressed data. Patch by Oleg Plakhotnyuk.</li>
<li><a class="reference external" href="http://bugs.python.org/13812">Issue #13812</a>: When a multiprocessing Process child raises an exception,
flush stderr after printing the exception traceback.</li>
<li><a class="reference external" href="http://bugs.python.org/13885">Issue #13885</a>: CVE-2011-3389: the _ssl module would always disable the CBC
IV attack countermeasure.</li>
<li><a class="reference external" href="http://bugs.python.org/13847">Issue #13847</a>: time.localtime() and time.gmtime() now raise an OSError instead
of ValueError on failure. time.ctime() and time.asctime() now raises an
OSError if localtime() failed. time.clock() now raises a RuntimeError if the
processor time used is not available or its value cannot be represented</li>
<li><a class="reference external" href="http://bugs.python.org/13772">Issue #13772</a>: In os.symlink() under Windows, do not try to guess the link
target’s type (file or directory). The detection was buggy and made the
call non-atomic (therefore prone to race conditions).</li>
<li><a class="reference external" href="http://bugs.python.org/6631">Issue #6631</a>: Disallow relative file paths in urllib urlopen methods.</li>
<li><a class="reference external" href="http://bugs.python.org/13722">Issue #13722</a>: Avoid silencing ImportErrors when initializing the codecs
registry.</li>
<li><a class="reference external" href="http://bugs.python.org/13781">Issue #13781</a>: Fix GzipFile bug that caused an exception to be raised when
opening for writing using a fileobj returned by os.fdopen().</li>
<li><a class="reference external" href="http://bugs.python.org/13803">Issue #13803</a>: Under Solaris, distutils doesn’t include bitness
in the directory name.</li>
<li><a class="reference external" href="http://bugs.python.org/10278">Issue #10278</a>: Add time.wallclock() function, monotonic clock.</li>
<li><a class="reference external" href="http://bugs.python.org/13809">Issue #13809</a>: Fix regression where bz2 module wouldn’t work when threads are
disabled. Original patch by Amaury Forgeot d’Arc.</li>
<li><a class="reference external" href="http://bugs.python.org/13589">Issue #13589</a>: Fix some serialization primitives in the aifc module.
Patch by Oleg Plakhotnyuk.</li>
<li><a class="reference external" href="http://bugs.python.org/13642">Issue #13642</a>: Unquote before b64encoding <tt class="docutils literal"><span class="pre">user:password</span></tt> during Basic
Authentication. Patch contributed by Joonas Kuorilehto.</li>
<li><a class="reference external" href="http://bugs.python.org/12364">Issue #12364</a>: Fix a hang in concurrent.futures.ProcessPoolExecutor.
The hang would occur when retrieving the result of a scheduled future after
the executor had been shut down.</li>
<li><a class="reference external" href="http://bugs.python.org/13502">Issue #13502</a>: threading: Fix a race condition in Event.wait() that made it
return False when the event was set and cleared right after.</li>
<li><a class="reference external" href="http://bugs.python.org/9993">Issue #9993</a>: When the source and destination are on different filesystems,
and the source is a symlink, shutil.move() now recreates a symlink on the
destination instead of copying the file contents. Patch by Jonathan Niehof
and Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/12926">Issue #12926</a>: Fix a bug in tarfile’s link extraction.</li>
<li><a class="reference external" href="http://bugs.python.org/13696">Issue #13696</a>: Fix the 302 Relative URL Redirection problem.</li>
<li><a class="reference external" href="http://bugs.python.org/13636">Issue #13636</a>: Weak ciphers are now disabled by default in the ssl module
(except when SSLv2 is explicitly asked for).</li>
<li><a class="reference external" href="http://bugs.python.org/12715">Issue #12715</a>: Add an optional symlinks argument to shutil functions
(copyfile, copymode, copystat, copy, copy2). When that parameter is
true, symlinks aren’t dereferenced and the operation instead acts on the
symlink itself (or creates one, if relevant). Patch by Hynek Schlawack.</li>
<li>Add a flags parameter to select.epoll.</li>
<li><a class="reference external" href="http://bugs.python.org/13626">Issue #13626</a>: Add support for SSL Diffie-Hellman key exchange, through the
SSLContext.load_dh_params() method and the ssl.OP_SINGLE_DH_USE option.</li>
<li><a class="reference external" href="http://bugs.python.org/11006">Issue #11006</a>: Don’t issue low level warning in subprocess when pipe2() fails.</li>
<li><a class="reference external" href="http://bugs.python.org/13620">Issue #13620</a>: Support for Chrome browser in webbrowser. Patch contributed
by Arnaud Calmettes.</li>
<li><a class="reference external" href="http://bugs.python.org/11829">Issue #11829</a>: Fix code execution holes in inspect.getattr_static for
metaclasses with metaclasses. Patch by Andreas Stührk.</li>
<li><a class="reference external" href="http://bugs.python.org/12708">Issue #12708</a>: Add starmap() and starmap_async() methods (similar to
itertools.starmap()) to multiprocessing.Pool. Patch by Hynek Schlawack.</li>
<li><a class="reference external" href="http://bugs.python.org/1785">Issue #1785</a>: Fix inspect and pydoc with misbehaving descriptors.</li>
<li><a class="reference external" href="http://bugs.python.org/13637">Issue #13637</a>: “a2b” functions in the binascii module now accept ASCII-only
unicode strings.</li>
<li><a class="reference external" href="http://bugs.python.org/13634">Issue #13634</a>: Add support for querying and disabling SSL compression.</li>
<li><a class="reference external" href="http://bugs.python.org/13627">Issue #13627</a>: Add support for SSL Elliptic Curve-based Diffie-Hellman
key exchange, through the SSLContext.set_ecdh_curve() method and the
ssl.OP_SINGLE_ECDH_USE option.</li>
<li><a class="reference external" href="http://bugs.python.org/13635">Issue #13635</a>: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers
choose the cipher based on their own preferences, rather than on the
client’s.</li>
<li><a class="reference external" href="http://bugs.python.org/11813">Issue #11813</a>: Fix inspect.getattr_static for modules. Patch by Andreas
Stührk.</li>
<li><a class="reference external" href="http://bugs.python.org/7502">Issue #7502</a>: Fix equality comparison for DocTestCase instances. Patch by
Cédric Krier.</li>
<li><a class="reference external" href="http://bugs.python.org/11870">Issue #11870</a>: threading: Properly reinitialize threads internal locks and
condition variables to avoid deadlocks in child processes.</li>
<li><a class="reference external" href="http://bugs.python.org/8035">Issue #8035</a>: urllib: Fix a bug where the client could remain stuck after a
redirection or an error.</li>
<li><a class="reference external" href="http://bugs.python.org/13560">Issue #13560</a>: os.strerror() now uses the current locale encoding instead of
UTF-8.</li>
<li><a class="reference external" href="http://bugs.python.org/8373">Issue #8373</a>: The filesystem path of AF_UNIX sockets now uses the filesystem
encoding and the surrogateescape error handler, rather than UTF-8. Patch
by David Watson.</li>
<li><a class="reference external" href="http://bugs.python.org/10350">Issue #10350</a>: Read and save errno before calling a function which might
overwrite it. Original patch by Hallvard B Furuseth.</li>
<li><a class="reference external" href="http://bugs.python.org/11610">Issue #11610</a>: Introduce a more general way to declare abstract properties.</li>
<li><a class="reference external" href="http://bugs.python.org/13591">Issue #13591</a>: A bug in importlib has been fixed that caused import_module
to load a module twice.</li>
<li><a class="reference external" href="http://bugs.python.org/13449">Issue #13449</a> sched.scheduler.run() method has a new “blocking” parameter which
when set to False makes run() execute the scheduled events due to expire
soonest (if any) and then return. Patch by Giampaolo Rodolà.</li>
<li><a class="reference external" href="http://bugs.python.org/8684">Issue #8684</a> sched.scheduler class can be safely used in multi-threaded
environments. Patch by Josiah Carlson and Giampaolo Rodolà.</li>
<li>Alias resource.error to OSError ala PEP 3151.</li>
<li><a class="reference external" href="http://bugs.python.org/5689">Issue #5689</a>: Add support for lzma compression to the tarfile module.</li>
<li><a class="reference external" href="http://bugs.python.org/13248">Issue #13248</a>: Turn 3.2’s PendingDeprecationWarning into 3.3’s
DeprecationWarning. It covers ‘cgi.escape’, ‘importlib.abc.PyLoader’,
‘importlib.abc.PyPycLoader’, ‘nntplib.NNTP.xgtitle’, ‘nntplib.NNTP.xpath’,
and private attributes of ‘smtpd.SMTPChannel’.</li>
<li><a class="reference external" href="http://bugs.python.org/5905">Issue #5905</a>, #13560: time.strftime() is now using the current locale
encoding, instead of UTF-8, if the wcsftime() function is not available.</li>
<li><a class="reference external" href="http://bugs.python.org/13464">Issue #13464</a>: Add a readinto() method to http.client.HTTPResponse. Patch
by Jon Kuhn.</li>
<li>tarfile.py: Correctly detect bzip2 compressed streams with blocksizes
other than 900k.</li>
<li><a class="reference external" href="http://bugs.python.org/13439">Issue #13439</a>: Fix many errors in turtle docstrings.</li>
<li><a class="reference external" href="http://bugs.python.org/6715">Issue #6715</a>: Add a module ‘lzma’ for compression using the LZMA algorithm.
Thanks to Per Øyvind Karlsen for the initial implementation.</li>
<li><a class="reference external" href="http://bugs.python.org/13487">Issue #13487</a>: Make inspect.getmodule robust against changes done to
sys.modules while it is iterating over it.</li>
<li><a class="reference external" href="http://bugs.python.org/12618">Issue #12618</a>: Fix a bug that prevented py_compile from creating byte
compiled files in the current directory. Initial patch by Sjoerd de Vries.</li>
<li><a class="reference external" href="http://bugs.python.org/13444">Issue #13444</a>: When stdout has been closed explicitly, we should not attempt
to flush it at shutdown and print an error.</li>
<li><a class="reference external" href="http://bugs.python.org/12567">Issue #12567</a>: The curses module uses Unicode functions for Unicode arguments
when it is linked to the ncurses library. It encodes also Unicode strings to
the locale encoding instead of UTF-8.</li>
<li><a class="reference external" href="http://bugs.python.org/12856">Issue #12856</a>: Ensure child processes do not inherit the parent’s random
seed for filename generation in the tempfile module. Patch by Brian
Harring.</li>
<li><a class="reference external" href="http://bugs.python.org/9957">Issue #9957</a>: SpooledTemporaryFile.truncate() now accepts an optional size
parameter, as other file-like objects. Patch by Ryan Kelly.</li>
<li><a class="reference external" href="http://bugs.python.org/13458">Issue #13458</a>: Fix a memory leak in the ssl module when decoding a
certificate with a subjectAltName. Patch by Robert Xiao.</li>
<li><a class="reference external" href="http://bugs.python.org/13415">Issue #13415</a>: os.unsetenv() doesn’t ignore errors anymore.</li>
<li><a class="reference external" href="http://bugs.python.org/13245">Issue #13245</a>: sched.scheduler class constructor’s timefunc and
delayfunct parameters are now optional.
scheduler.enter and scheduler.enterabs methods gained a new kwargs parameter.
Patch contributed by Chris Clark.</li>
<li><a class="reference external" href="http://bugs.python.org/12328">Issue #12328</a>: Under Windows, refactor handling of Ctrl-C events and
make _multiprocessing.win32.WaitForMultipleObjects interruptible when
the wait_flag parameter is false. Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/13322">Issue #13322</a>: Fix BufferedWriter.write() to ensure that BlockingIOError is
raised when the wrapped raw file is non-blocking and the write would block.
Previous code assumed that the raw write() would raise BlockingIOError, but
RawIOBase.write() is defined to returned None when the call would block.
Patch by sbt.</li>
<li><a class="reference external" href="http://bugs.python.org/13358">Issue #13358</a>: HTMLParser now calls handle_data only once for each CDATA.</li>
<li><a class="reference external" href="http://bugs.python.org/4147">Issue #4147</a>: minidom’s toprettyxml no longer adds whitespace around a text
node when it is the only child of an element. Initial patch by Dan
Kenigsberg.</li>
<li><a class="reference external" href="http://bugs.python.org/13374">Issue #13374</a>: The Windows bytes API has been deprecated in the os module. Use
Unicode filenames instead of bytes filenames to not depend on the ANSI code
page anymore and to support any filename.</li>
<li><a class="reference external" href="http://bugs.python.org/13297">Issue #13297</a>: Use bytes type to send and receive binary data through XMLRPC.</li>
<li><a class="reference external" href="http://bugs.python.org/6397">Issue #6397</a>: Support “/dev/poll” polling objects in select module,
under Solaris & derivatives.</li>
<li>Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly
handles non-valid attributes, including adjacent and unquoted attributes.</li>
<li><a class="reference external" href="http://bugs.python.org/13193">Issue #13193</a>: Fix distutils.filelist.FileList and packaging.manifest.Manifest
under Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/13384">Issue #13384</a>: Remove unnecessary __future__ import in Lib/random.py</li>
<li><a class="reference external" href="http://bugs.python.org/13149">Issue #13149</a>: Speed up append-only StringIO objects.</li>
<li><a class="reference external" href="http://bugs.python.org/13373">Issue #13373</a>: multiprocessing.Queue.get() could sometimes block indefinitely
when called with a timeout. Patch by Arnaud Ysmal.</li>
<li><a class="reference external" href="http://bugs.python.org/13254">Issue #13254</a>: Fix Maildir initialization so that maildir contents
are read correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/3067">Issue #3067</a>: locale.setlocale() now raises TypeError if the second
argument is an invalid iterable. Its documentation and docstring
were also updated. Initial patch by Jyrki Pulliainen.</li>
<li><a class="reference external" href="http://bugs.python.org/13140">Issue #13140</a>: Fix the daemon_threads attribute of ThreadingMixIn.</li>
<li><a class="reference external" href="http://bugs.python.org/13339">Issue #13339</a>: Fix compile error in posixmodule.c due to missing semicolon.
Thanks to Robert Xiao.</li>
<li>Byte compilation in packaging is now isolated from the calling Python -B or
-O options, instead of being disallowed under -B or buggy under -O.</li>
<li><a class="reference external" href="http://bugs.python.org/10570">Issue #10570</a>: curses.putp() and curses.tparm() are now expecting a byte
string, instead of a Unicode string.</li>
<li><a class="reference external" href="http://bugs.python.org/13295">Issue #13295</a>: http.server now produces valid HTML 4.01 strict.</li>
<li><a class="reference external" href="http://bugs.python.org/2892">Issue #2892</a>: preserve iterparse events in case of SyntaxError.</li>
<li><a class="reference external" href="http://bugs.python.org/13287">Issue #13287</a>: urllib.request and urllib.error now contains an __all__
attribute to expose only relevant classes and functions. Patch by Florent
Xicluna.</li>
<li><a class="reference external" href="http://bugs.python.org/670664">Issue #670664</a>: Fix HTMLParser to correctly handle the content of
<tt class="docutils literal"><span class="pre"><script>...</script></span></tt> and <tt class="docutils literal"><span class="pre"><style>...</style></span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/10817">Issue #10817</a>: Fix urlretrieve function to raise ContentTooShortError even
when reporthook is None. Patch by Jyrki Pulliainen.</li>
<li>Fix the xmlrpc.client user agent to return something similar to
urllib.request user agent: “Python-xmlrpc/3.3”.</li>
<li><a class="reference external" href="http://bugs.python.org/13293">Issue #13293</a>: Better error message when trying to marshal bytes using
xmlrpc.client.</li>
<li><a class="reference external" href="http://bugs.python.org/13291">Issue #13291</a>: NameError in xmlrpc package.</li>
<li><a class="reference external" href="http://bugs.python.org/13258">Issue #13258</a>: Use callable() built-in in the standard library.</li>
<li><a class="reference external" href="http://bugs.python.org/13273">Issue #13273</a>: fix a bug that prevented HTMLParser to properly detect some
tags when strict=False.</li>
<li><a class="reference external" href="http://bugs.python.org/11183">Issue #11183</a>: Add finer-grained exceptions to the ssl module, so that
you don’t have to inspect the exception’s attributes in the common case.</li>
<li><a class="reference external" href="http://bugs.python.org/13216">Issue #13216</a>: Add cp65001 codec, the Windows UTF-8 (CP_UTF8).</li>
<li><a class="reference external" href="http://bugs.python.org/13226">Issue #13226</a>: Add RTLD_xxx constants to the os module. These constants can be
used with sys.setdlopenflags().</li>
<li><a class="reference external" href="http://bugs.python.org/10278">Issue #10278</a>: Add clock_getres(), clock_gettime() and CLOCK_xxx constants to
the time module. time.clock_gettime(time.CLOCK_MONOTONIC) provides a
monotonic clock</li>
<li><a class="reference external" href="http://bugs.python.org/10332">Issue #10332</a>: multiprocessing: fix a race condition when a Pool is closed
before all tasks have completed.</li>
<li><a class="reference external" href="http://bugs.python.org/13255">Issue #13255</a>: wrong docstrings in array module.</li>
<li><a class="reference external" href="http://bugs.python.org/8540">Issue #8540</a>: Remove deprecated Context._clamp attribute in Decimal module.</li>
<li><a class="reference external" href="http://bugs.python.org/13235">Issue #13235</a>: Added DeprecationWarning to logging.warn() method and function.</li>
<li><a class="reference external" href="http://bugs.python.org/9168">Issue #9168</a>: now smtpd is able to bind privileged port.</li>
<li><a class="reference external" href="http://bugs.python.org/12529">Issue #12529</a>: fix cgi.parse_header issue on strings with double-quotes and
semicolons together. Patch by Ben Darnell and Petri Lehtinen.</li>
<li><a class="reference external" href="http://bugs.python.org/13227">Issue #13227</a>: functools.lru_cache() now has a option to distinguish
calls with different argument types.</li>
<li><a class="reference external" href="http://bugs.python.org/6090">Issue #6090</a>: zipfile raises a ValueError when a document with a timestamp
earlier than 1980 is provided. Patch contributed by Petri Lehtinen.</li>
<li><a class="reference external" href="http://bugs.python.org/13150">Issue #13150</a>: sysconfig no longer parses the Makefile and config.h files
when imported, instead doing it at build time. This makes importing
sysconfig faster and reduces Python startup time by 20%.</li>
<li><a class="reference external" href="http://bugs.python.org/12448">Issue #12448</a>: smtplib now flushes stdout while running <tt class="docutils literal"><span class="pre">python</span> <span class="pre">-m</span> <span class="pre">smtplib</span></tt>
in order to display the prompt correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/12454">Issue #12454</a>: The mailbox module is now using ASCII, instead of the locale
encoding, to read and write .mh_sequences files.</li>
<li><a class="reference external" href="http://bugs.python.org/13194">Issue #13194</a>: zlib.compressobj().copy() and zlib.decompressobj().copy() are
now available on Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/1673007">Issue #1673007</a>: urllib.request now supports HEAD request via new method argument.
Patch contributions by David Stanek, Patrick Westerhoff and Ezio Melotti.</li>
<li><a class="reference external" href="http://bugs.python.org/12386">Issue #12386</a>: packaging does not fail anymore when writing the RESOURCES
file.</li>
<li><a class="reference external" href="http://bugs.python.org/13158">Issue #13158</a>: Fix decoding and encoding of GNU tar specific base-256 number
fields in tarfile.</li>
<li><a class="reference external" href="http://bugs.python.org/13025">Issue #13025</a>: mimetypes is now reading MIME types using the UTF-8 encoding,
instead of the locale encoding.</li>
<li><a class="reference external" href="http://bugs.python.org/10653">Issue #10653</a>: On Windows, use strftime() instead of wcsftime() because
wcsftime() doesn’t format time zone correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/13150">Issue #13150</a>: The tokenize module doesn’t compile large regular expressions
at startup anymore.</li>
<li><a class="reference external" href="http://bugs.python.org/11171">Issue #11171</a>: Fix distutils.sysconfig.get_makefile_filename when Python was
configured with different prefix and exec-prefix.</li>
<li><a class="reference external" href="http://bugs.python.org/11254">Issue #11254</a>: Teach distutils and packaging to compile .pyc and .pyo files in
PEP 3147-compliant __pycache__ directories.</li>
<li><a class="reference external" href="http://bugs.python.org/7367">Issue #7367</a>: Fix pkgutil.walk_paths to skip directories whose
contents cannot be read.</li>
<li><a class="reference external" href="http://bugs.python.org/3163">Issue #3163</a>: The struct module gets new format characters ‘n’ and ‘N’
supporting C integer types <tt class="docutils literal"><span class="pre">ssize_t</span></tt> and <tt class="docutils literal"><span class="pre">size_t</span></tt>, respectively.</li>
<li><a class="reference external" href="http://bugs.python.org/13099">Issue #13099</a>: Fix sqlite3.Cursor.lastrowid under a Turkish locale.
Reported and diagnosed by Thomas Kluyver.</li>
<li><a class="reference external" href="http://bugs.python.org/13087">Issue #13087</a>: BufferedReader.seek() now always raises UnsupportedOperation
if the underlying raw stream is unseekable, even if the seek could be
satisfied using the internal buffer. Patch by John O’Connor.</li>
<li><a class="reference external" href="http://bugs.python.org/7689">Issue #7689</a>: Allow pickling of dynamically created classes when their
metaclass is registered with copyreg. Patch by Nicolas M. Thiéry and Craig
Citro.</li>
<li><a class="reference external" href="http://bugs.python.org/13034">Issue #13034</a>: When decoding some SSL certificates, the subjectAltName
extension could be unreported.</li>
<li><a class="reference external" href="http://bugs.python.org/12306">Issue #12306</a>: Expose the runtime version of the zlib C library as a constant,
ZLIB_RUNTIME_VERSION, in the zlib module. Patch by Torsten Landschoff.</li>
<li><a class="reference external" href="http://bugs.python.org/12959">Issue #12959</a>: Add collections.ChainMap to collections.__all__.</li>
<li><a class="reference external" href="http://bugs.python.org/8933">Issue #8933</a>: distutils’ PKG-INFO files and packaging’s METADATA files will
now correctly report Metadata-Version: 1.1 instead of 1.0 if a Classifier or
Download-URL field is present.</li>
<li><a class="reference external" href="http://bugs.python.org/12567">Issue #12567</a>: Add curses.unget_wch() function. Push a character so the next
get_wch() will return it.</li>
<li><a class="reference external" href="http://bugs.python.org/9561">Issue #9561</a>: distutils and packaging now writes egg-info files using UTF-8,
instead of the locale encoding.</li>
<li><a class="reference external" href="http://bugs.python.org/8286">Issue #8286</a>: The distutils command sdist will print a warning message instead
of crashing when an invalid path is given in the manifest template.</li>
<li><a class="reference external" href="http://bugs.python.org/12841">Issue #12841</a>: tarfile unnecessarily checked the existence of numerical user
and group ids on extraction. If one of them did not exist the respective id
of the current user (i.e. root) was used for the file and ownership
information was lost.</li>
<li><a class="reference external" href="http://bugs.python.org/12888">Issue #12888</a>: Fix a bug in HTMLParser.unescape that prevented it to escape
more than 128 entities. Patch by Peter Otten.</li>
<li><a class="reference external" href="http://bugs.python.org/12878">Issue #12878</a>: Expose a __dict__ attribute on io.IOBase and its subclasses.</li>
<li><a class="reference external" href="http://bugs.python.org/12494">Issue #12494</a>: On error, call(), check_call(), check_output() and
getstatusoutput() functions of the subprocess module now kill the process,
read its status (to avoid zombis) and close pipes.</li>
<li><a class="reference external" href="http://bugs.python.org/12720">Issue #12720</a>: Expose low-level Linux extended file attribute functions in os.</li>
<li><a class="reference external" href="http://bugs.python.org/10946">Issue #10946</a>: The distutils commands bdist_dumb, bdist_wininst and bdist_msi
now respect a –skip-build option given to bdist. The packaging commands
were fixed too.</li>
<li><a class="reference external" href="http://bugs.python.org/12847">Issue #12847</a>: Fix a crash with negative PUT and LONG_BINPUT arguments in
the C pickle implementation.</li>
<li><a class="reference external" href="http://bugs.python.org/11564">Issue #11564</a>: Avoid crashes when trying to pickle huge objects or containers
(more than 2**31 items). Instead, in most cases, an OverflowError is raised.</li>
<li><a class="reference external" href="http://bugs.python.org/12287">Issue #12287</a>: Fix a stack corruption in ossaudiodev module when the FD is
greater than FD_SETSIZE.</li>
<li><a class="reference external" href="http://bugs.python.org/12839">Issue #12839</a>: Fix crash in zlib module due to version mismatch.
Fix by Richard M. Tew.</li>
<li><a class="reference external" href="http://bugs.python.org/9923">Issue #9923</a>: The mailcap module now correctly uses the platform path
separator for the MAILCAP environment variable on non-POSIX platforms.</li>
<li><a class="reference external" href="http://bugs.python.org/12835">Issue #12835</a>: Follow up to #6560 that unconditionally prevents use of the
unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets. Patch by David
Watson.</li>
<li><a class="reference external" href="http://bugs.python.org/12803">Issue #12803</a>: SSLContext.load_cert_chain() now accepts a password argument
to be used if the private key is encrypted. Patch by Adam Simpkins.</li>
<li><a class="reference external" href="http://bugs.python.org/11657">Issue #11657</a>: Fix sending file descriptors over 255 over a multiprocessing
Pipe.</li>
<li><a class="reference external" href="http://bugs.python.org/12811">Issue #12811</a>: tabnanny.check() now promptly closes checked files. Patch by
Anthony Briggs.</li>
<li><a class="reference external" href="http://bugs.python.org/6560">Issue #6560</a>: The sendmsg/recvmsg API is now exposed by the socket module
when provided by the underlying platform, supporting processing of
ancillary data in pure Python code. Patch by David Watson and Heiko Wundram.</li>
<li><a class="reference external" href="http://bugs.python.org/12326">Issue #12326</a>: On Linux, sys.platform doesn’t contain the major version
anymore. It is now always ‘linux’, instead of ‘linux2’ or ‘linux3’ depending
on the Linux version used to build Python.</li>
<li><a class="reference external" href="http://bugs.python.org/12213">Issue #12213</a>: Fix a buffering bug with interleaved reads and writes that
could appear on BufferedRandom streams.</li>
<li><a class="reference external" href="http://bugs.python.org/12778">Issue #12778</a>: Reduce memory consumption when JSON-encoding a large
container of many small objects.</li>
<li><a class="reference external" href="http://bugs.python.org/12650">Issue #12650</a>: Fix a race condition where a subprocess.Popen could leak
resources (FD/zombie) when killed at the wrong time.</li>
<li><a class="reference external" href="http://bugs.python.org/12744">Issue #12744</a>: Fix inefficient representation of integers between 2**31 and
2**63 on systems with a 64-bit C “long”.</li>
<li><a class="reference external" href="http://bugs.python.org/12646">Issue #12646</a>: Add an ‘eof’ attribute to zlib.Decompress, to make it easier to
detect truncated input streams.</li>
<li><a class="reference external" href="http://bugs.python.org/11513">Issue #11513</a>: Fix exception handling <tt class="docutils literal"><span class="pre">tarfile.TarFile.gzopen()</span></tt> when
the file cannot be opened.</li>
<li><a class="reference external" href="http://bugs.python.org/12687">Issue #12687</a>: Fix a possible buffering bug when unpickling text mode
(protocol 0, mostly) pickles.</li>
<li><a class="reference external" href="http://bugs.python.org/10087">Issue #10087</a>: Fix the html output format of the calendar module.</li>
<li><a class="reference external" href="http://bugs.python.org/13121">Issue #13121</a>: add support for inplace math operators to collections.Counter.</li>
<li>Add support for unary plus and unary minus to collections.Counter.</li>
<li><a class="reference external" href="http://bugs.python.org/12683">Issue #12683</a>: urlparse updated to include svn as schemes that uses relative
paths. (svn from 1.5 onwards support relative path).</li>
<li><a class="reference external" href="http://bugs.python.org/12655">Issue #12655</a>: Expose functions from sched.h in the os module: sched_yield(),
sched_setscheduler(), sched_getscheduler(), sched_setparam(),
sched_get_min_priority(), sched_get_max_priority(), sched_rr_get_interval(),
sched_getaffinity(), sched_setaffinity().</li>
<li>Add ThreadError to threading.__all__.</li>
<li>Issues #11104, #8688: Fix the behavior of distutils’ sdist command with
manually-maintained MANIFEST files.</li>
<li><a class="reference external" href="http://bugs.python.org/11281">Issue #11281</a>: smtplib.STMP gets source_address parameter, which adds the
ability to bind to specific source address on a machine with multiple
interfaces. Patch by Paulo Scardine.</li>
<li><a class="reference external" href="http://bugs.python.org/12464">Issue #12464</a>: tempfile.TemporaryDirectory.cleanup() should not follow
symlinks: fix it. Patch by Petri Lehtinen.</li>
<li><a class="reference external" href="http://bugs.python.org/8887">Issue #8887</a>: “pydoc somebuiltin.somemethod” (or help(‘somebuiltin.somemethod’)
in Python code) now finds the doc of the method.</li>
<li><a class="reference external" href="http://bugs.python.org/10968">Issue #10968</a>: Remove indirection in threading. The public names (Event,
Condition, etc.) used to be factory functions returning instances of hidden
classes (_Event, _Condition, etc.), because (if Guido recalls correctly) this
code pre-dates the ability to subclass extension types. It is now possible
to inherit from these classes, without having to import the private
underscored names like multiprocessing did.</li>
<li><a class="reference external" href="http://bugs.python.org/9723">Issue #9723</a>: Add shlex.quote functions, to escape filenames and command
lines.</li>
<li><a class="reference external" href="http://bugs.python.org/12603">Issue #12603</a>: Fix pydoc.synopsis() on files with non-negative st_mtime.</li>
<li><a class="reference external" href="http://bugs.python.org/12514">Issue #12514</a>: Use try/finally to assure the timeit module restores garbage
collections when it is done.</li>
<li><a class="reference external" href="http://bugs.python.org/12607">Issue #12607</a>: In subprocess, fix issue where if stdin, stdout or stderr is
given as a low fd, it gets overwritten.</li>
<li><a class="reference external" href="http://bugs.python.org/12576">Issue #12576</a>: Fix urlopen behavior on sites which do not send (or obfuscate)
a <tt class="docutils literal"><span class="pre">Connection:</span> <span class="pre">close</span></tt> header.</li>
<li><a class="reference external" href="http://bugs.python.org/12560">Issue #12560</a>: Build libpython.so on OpenBSD. Patch by Stefan Sperling.</li>
<li><a class="reference external" href="http://bugs.python.org/1813">Issue #1813</a>: Fix codec lookup under Turkish locales.</li>
<li><a class="reference external" href="http://bugs.python.org/12591">Issue #12591</a>: Improve support of “universal newlines” in the subprocess
module: the piped streams can now be properly read from or written to.</li>
<li><a class="reference external" href="http://bugs.python.org/12591">Issue #12591</a>: Allow io.TextIOWrapper to work with raw IO objects (without
a read1() method), and add a <em>write_through</em> parameter to mandate
unbuffered writes.</li>
<li><a class="reference external" href="http://bugs.python.org/10883">Issue #10883</a>: Fix socket leaks in urllib.request when using FTP.</li>
<li><a class="reference external" href="http://bugs.python.org/12592">Issue #12592</a>: Make Python build on OpenBSD 5 (and future major releases).</li>
<li><a class="reference external" href="http://bugs.python.org/12372">Issue #12372</a>: POSIX semaphores are broken on AIX: don’t use them.</li>
<li><a class="reference external" href="http://bugs.python.org/12551">Issue #12551</a>: Provide a get_channel_binding() method on SSL sockets so as
to get channel binding data for the current SSL session (only the
“tls-unique” channel binding is implemented). This allows the implementation
of certain authentication mechanisms such as SCRAM-SHA-1-PLUS. Patch by
Jacek Konieczny.</li>
<li><a class="reference external" href="http://bugs.python.org/665194">Issue #665194</a>: email.utils now has format_datetime and parsedate_to_datetime
functions, allowing for round tripping of RFC2822 format dates.</li>
<li><a class="reference external" href="http://bugs.python.org/12571">Issue #12571</a>: Add a plat-linux3 directory mirroring the plat-linux2
directory, so that “import DLFCN” and other similar imports work on
Linux 3.0.</li>
<li><a class="reference external" href="http://bugs.python.org/7484">Issue #7484</a>: smtplib no longer puts <> around addresses in VRFY and EXPN
commands; they aren’t required and in fact postfix doesn’t support that form.</li>
<li><a class="reference external" href="http://bugs.python.org/12273">Issue #12273</a>: Remove ast.__version__. AST changes can be accounted for by
checking sys.version_info or sys._mercurial.</li>
<li>Silence spurious “broken pipe” tracebacks when shutting down a
ProcessPoolExecutor.</li>
<li>Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor
by joining all queues and processes when shutdown() is called.</li>
<li><a class="reference external" href="http://bugs.python.org/11603">Issue #11603</a>: Fix a crash when __str__ is rebound as __repr__. Patch by
Andreas Stührk.</li>
<li><a class="reference external" href="http://bugs.python.org/11321">Issue #11321</a>: Fix a crash with multiple imports of the _pickle module when
embedding Python. Patch by Andreas Stührk.</li>
<li><a class="reference external" href="http://bugs.python.org/6755">Issue #6755</a>: Add get_wch() method to curses.window class. Patch by Iñigo
Serna.</li>
<li>Add cgi.closelog() function to close the log file.</li>
<li><a class="reference external" href="http://bugs.python.org/12502">Issue #12502</a>: asyncore: fix polling loop with AF_UNIX sockets.</li>
<li><a class="reference external" href="http://bugs.python.org/4376">Issue #4376</a>: ctypes now supports nested structures in a endian different than
the parent structure. Patch by Vlad Riscutia.</li>
<li>Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
TextIOWrapper to a huge value, not TypeError.</li>
<li><a class="reference external" href="http://bugs.python.org/12504">Issue #12504</a>: Close file handles in a timely manner in packaging.database.
This fixes a bug with the remove (uninstall) feature on Windows.</li>
<li>Issues #12169 and #10510: Factor out code used by various packaging commands
to make HTTP POST requests, and make sure it uses CRLF.</li>
<li><a class="reference external" href="http://bugs.python.org/12016">Issue #12016</a>: Multibyte CJK decoders now resynchronize faster. They only
ignore the first byte of an invalid byte sequence. For example,
b’xffn’.decode(‘gb2312’, ‘replace’) gives ‘ufffdn’ instead of ‘ufffd’.</li>
<li><a class="reference external" href="http://bugs.python.org/12459">Issue #12459</a>: time.sleep() now raises a ValueError if the sleep length is
negative, instead of an infinite sleep on Windows or raising an IOError on
Linux for example, to have the same behaviour on all platforms.</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: pydoc: html_getfile() now uses tokenize.open() to support
Python scripts using a encoding different than UTF-8 (read the coding cookie
of the script).</li>
<li><a class="reference external" href="http://bugs.python.org/12493">Issue #12493</a>: subprocess: Popen.communicate() now also handles EINTR errors
if the process has only one pipe.</li>
<li><a class="reference external" href="http://bugs.python.org/12467">Issue #12467</a>: warnings: fix a race condition if a warning is emitted at
shutdown, if globals()[‘__file__’] is None.</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: pydoc: importfile() now opens the Python script in binary mode,
instead of text mode using the locale encoding, to avoid encoding issues.</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: runpy: run_path() now opens the Python script in binary mode,
instead of text mode using the locale encoding, to support other encodings
than UTF-8 (scripts using the coding cookie).</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: xml.dom.pulldom: parse() now opens files in binary mode instead
of the text mode (using the locale encoding) to avoid encoding issues.</li>
<li><a class="reference external" href="http://bugs.python.org/12147">Issue #12147</a>: Adjust the new-in-3.2 smtplib.send_message method for better
conformance to the RFCs: correctly handle Sender and Resent- headers.</li>
<li><a class="reference external" href="http://bugs.python.org/12352">Issue #12352</a>: Fix a deadlock in multiprocessing.Heap when a block is freed by
the garbage collector while the Heap lock is held.</li>
<li><a class="reference external" href="http://bugs.python.org/12462">Issue #12462</a>: time.sleep() now immediately calls the (Python) signal handler
if it is interrupted by a signal, instead of having to wait until the next
instruction.</li>
<li><a class="reference external" href="http://bugs.python.org/12442">Issue #12442</a>: new shutil.disk_usage function, providing total, used and free
disk space statistics.</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: The XInclude default loader of xml.etree now decodes files from
UTF-8 instead of the locale encoding if the encoding is not specified. It now
also opens XML files for the parser in binary mode instead of the text mode
to avoid encoding issues.</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: doctest.debug_script() doesn’t create a temporary file
anymore to avoid encoding issues.</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: pydoc.synopsis() now reads the encoding cookie if available,
to read the Python script from the right encoding.</li>
<li><a class="reference external" href="http://bugs.python.org/12451">Issue #12451</a>: distutils now opens the setup script in binary mode to read the
encoding cookie, instead of opening it in UTF-8.</li>
<li><a class="reference external" href="http://bugs.python.org/9516">Issue #9516</a>: On Mac OS X, change Distutils to no longer globally attempt to
check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the
interpreter process. This could cause failures in non-Distutils subprocesses
and was unreliable since tests or user programs could modify the interpreter
environment after Distutils set it. Instead, have Distutils set the
deployment target only in the environment of each build subprocess. It is
still possible to globally override the default by setting
MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be
greater or equal to the default value, the value with which the interpreter
was built. Also, implement the same handling in packaging.</li>
<li><a class="reference external" href="http://bugs.python.org/12422">Issue #12422</a>: In the copy module, don’t store objects that are their own copy
in the memo dict.</li>
<li><a class="reference external" href="http://bugs.python.org/12303">Issue #12303</a>: Add sigwaitinfo() and sigtimedwait() to the signal module.</li>
<li><a class="reference external" href="http://bugs.python.org/12404">Issue #12404</a>: Remove C89 incompatible code from mmap module. Patch by Akira
Kitada.</li>
<li><a class="reference external" href="http://bugs.python.org/1874">Issue #1874</a>: email now detects and reports as a defect the presence of
any CTE other than 7bit, 8bit, or binary on a multipart.</li>
<li><a class="reference external" href="http://bugs.python.org/12383">Issue #12383</a>: Fix subprocess module with env={}: don’t copy the environment
variables, start with an empty environment.</li>
<li><a class="reference external" href="http://bugs.python.org/11637">Issue #11637</a>: Fix support for importing packaging setup hooks from the
project directory.</li>
<li><a class="reference external" href="http://bugs.python.org/6771">Issue #6771</a>: Moved the curses.wrapper function from the single-function
wrapper module into __init__, eliminating the module. Since __init__ was
already importing the function to curses.wrapper, there is no API change.</li>
<li><a class="reference external" href="http://bugs.python.org/11584">Issue #11584</a>: email.header.decode_header no longer fails if the header
passed to it is a Header object, and Header/make_header no longer fail
if given binary unknown-8bit input.</li>
<li><a class="reference external" href="http://bugs.python.org/11700">Issue #11700</a>: mailbox proxy object close methods can now be called multiple
times without error.</li>
<li><a class="reference external" href="http://bugs.python.org/11767">Issue #11767</a>: Correct file descriptor leak in mailbox’s __getitem__ method.</li>
<li><a class="reference external" href="http://bugs.python.org/12133">Issue #12133</a>: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP
connection if its getresponse() method fails with a socket error. Patch
written by Ezio Melotti.</li>
<li><a class="reference external" href="http://bugs.python.org/12240">Issue #12240</a>: Allow multiple setup hooks in packaging’s setup.cfg files.
Original patch by Erik Bray.</li>
<li><a class="reference external" href="http://bugs.python.org/9284">Issue #9284</a>: Allow inspect.findsource() to find the source of doctest
functions.</li>
<li><a class="reference external" href="http://bugs.python.org/11595">Issue #11595</a>: Fix assorted bugs in packaging.util.cfg_to_args, a
compatibility helper for the distutils-packaging transition. Original patch
by Erik Bray.</li>
<li><a class="reference external" href="http://bugs.python.org/12287">Issue #12287</a>: In ossaudiodev, check that the device isn’t closed in several
methods.</li>
<li><a class="reference external" href="http://bugs.python.org/12009">Issue #12009</a>: Fixed regression in netrc file comment handling.</li>
<li><a class="reference external" href="http://bugs.python.org/12246">Issue #12246</a>: Warn and fail when trying to install a third-party project from
an uninstalled Python (built in a source checkout). Original patch by
Tshepang Lekhonkhobe.</li>
<li><a class="reference external" href="http://bugs.python.org/10694">Issue #10694</a>: zipfile now ignores garbage at the end of a zipfile.</li>
<li><a class="reference external" href="http://bugs.python.org/12283">Issue #12283</a>: Fixed regression in smtplib quoting of leading dots in DATA.</li>
<li><a class="reference external" href="http://bugs.python.org/10424">Issue #10424</a>: Argparse now includes the names of the missing required
arguments in the missing arguments error message.</li>
<li><a class="reference external" href="http://bugs.python.org/12168">Issue #12168</a>: SysLogHandler now allows NUL termination to be controlled using
a new ‘append_nul’ attribute on the handler.</li>
<li><a class="reference external" href="http://bugs.python.org/11583">Issue #11583</a>: Speed up os.path.isdir on Windows by using GetFileAttributes
instead of os.stat.</li>
<li><a class="reference external" href="http://bugs.python.org/12021">Issue #12021</a>: Make mmap’s read() method argument optional. Patch by Petri
Lehtinen.</li>
<li><a class="reference external" href="http://bugs.python.org/9205">Issue #9205</a>: concurrent.futures.ProcessPoolExecutor now detects killed
children and raises BrokenProcessPool in such a situation. Previously it
would reliably freeze/deadlock.</li>
<li><a class="reference external" href="http://bugs.python.org/12040">Issue #12040</a>: Expose a new attribute <tt class="docutils literal"><span class="pre">sentinel</span></tt> on instances of
<tt class="docutils literal"><span class="pre">multiprocessing.Process</span></tt>. Also, fix Process.join() to not use polling
anymore, when given a timeout.</li>
<li><a class="reference external" href="http://bugs.python.org/11893">Issue #11893</a>: Remove obsolete internal wrapper class <tt class="docutils literal"><span class="pre">SSLFakeFile</span></tt> in the
smtplib module. Patch by Catalin Iacob.</li>
<li><a class="reference external" href="http://bugs.python.org/12080">Issue #12080</a>: Fix a Decimal.power() case that took an unreasonably long time
to compute.</li>
<li><a class="reference external" href="http://bugs.python.org/12221">Issue #12221</a>: Remove __version__ attributes from pyexpat, pickle, tarfile,
pydoc, tkinter, and xml.parsers.expat. This were useless version constants
left over from the Mercurial transition</li>
<li>Named tuples now work correctly with vars().</li>
<li><a class="reference external" href="http://bugs.python.org/12085">Issue #12085</a>: Fix an attribute error in subprocess.Popen destructor if the
constructor has failed, e.g. because of an undeclared keyword argument. Patch
written by Oleg Oshmyan.</li>
<li><a class="reference external" href="http://bugs.python.org/12028">Issue #12028</a>: Make threading._get_ident() public, rename it to
threading.get_ident() and document it. This function was already used using
_thread.get_ident().</li>
<li><a class="reference external" href="http://bugs.python.org/12171">Issue #12171</a>: IncrementalEncoder.reset() of CJK codecs (multibytecodec) calls
encreset() instead of decreset().</li>
<li><a class="reference external" href="http://bugs.python.org/12218">Issue #12218</a>: Removed wsgiref.egg-info.</li>
<li><a class="reference external" href="http://bugs.python.org/12196">Issue #12196</a>: Add pipe2() to the os module.</li>
<li><a class="reference external" href="http://bugs.python.org/985064">Issue #985064</a>: Make plistlib more resilient to faulty input plists.
Patch by Mher Movsisyan.</li>
<li><a class="reference external" href="http://bugs.python.org/1625">Issue #1625</a>: BZ2File and bz2.decompress() now support multi-stream files.
Initial patch by Nir Aides.</li>
<li><a class="reference external" href="http://bugs.python.org/12175">Issue #12175</a>: BufferedReader.read(-1) now calls raw.readall() if available.</li>
<li><a class="reference external" href="http://bugs.python.org/12175">Issue #12175</a>: FileIO.readall() now only reads the file position and size
once.</li>
<li><a class="reference external" href="http://bugs.python.org/12175">Issue #12175</a>: RawIOBase.readall() now returns None if read() returns None.</li>
<li><a class="reference external" href="http://bugs.python.org/12175">Issue #12175</a>: FileIO.readall() now raises a ValueError instead of an IOError
if the file is closed.</li>
<li><a class="reference external" href="http://bugs.python.org/11109">Issue #11109</a>: New service_action method for BaseServer, used by ForkingMixin
class for cleanup. Initial Patch by Justin Warkentin.</li>
<li><a class="reference external" href="http://bugs.python.org/12045">Issue #12045</a>: Avoid duplicate execution of command in
ctypes.util._get_soname(). Patch by Sijin Joseph.</li>
<li><a class="reference external" href="http://bugs.python.org/10818">Issue #10818</a>: Remove the Tk GUI and the serve() function of the pydoc module,
pydoc -g has been deprecated in Python 3.2 and it has a new enhanced web
server.</li>
<li><a class="reference external" href="http://bugs.python.org/1441530">Issue #1441530</a>: In imaplib, read the data in one chunk to speed up large
reads and simplify code.</li>
<li><a class="reference external" href="http://bugs.python.org/12070">Issue #12070</a>: Fix the Makefile parser of the sysconfig module to handle
correctly references to “bogus variable” (e.g. “prefix=$/opt/python”).</li>
<li><a class="reference external" href="http://bugs.python.org/12100">Issue #12100</a>: Don’t reset incremental encoders of CJK codecs at each call to
their encode() method anymore, but continue to call the reset() method if the
final argument is True.</li>
<li><a class="reference external" href="http://bugs.python.org/12049">Issue #12049</a>: Add RAND_bytes() and RAND_pseudo_bytes() functions to the ssl
module.</li>
<li><a class="reference external" href="http://bugs.python.org/6501">Issue #6501</a>: os.device_encoding() returns None on Windows if the application
has no console.</li>
<li><a class="reference external" href="http://bugs.python.org/12105">Issue #12105</a>: Add O_CLOEXEC to the os module.</li>
<li><a class="reference external" href="http://bugs.python.org/12079">Issue #12079</a>: Decimal(‘Infinity’).fma(Decimal(‘0’), (3.91224318126786e+19+0j))
now raises TypeError (reflecting the invalid type of the 3rd argument) rather
than Decimal.InvalidOperation.</li>
<li><a class="reference external" href="http://bugs.python.org/12124">Issue #12124</a>: zipimport doesn’t keep a reference to zlib.decompress() anymore
to be able to unload the module.</li>
<li>Add the packaging module, an improved fork of distutils (also known as
distutils2).</li>
<li><a class="reference external" href="http://bugs.python.org/12065">Issue #12065</a>: connect_ex() on an SSL socket now returns the original errno
when the socket’s timeout expires (it used to return None).</li>
<li><a class="reference external" href="http://bugs.python.org/8809">Issue #8809</a>: The SMTP_SSL constructor and SMTP.starttls() now support
passing a <tt class="docutils literal"><span class="pre">context</span></tt> argument pointing to an ssl.SSLContext instance.
Patch by Kasun Herath.</li>
<li><a class="reference external" href="http://bugs.python.org/9516">Issue #9516</a>: <a class="reference external" href="http://bugs.python.org/9516">Issue #9516</a>: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET
is set in shell.</li>
<li><a class="reference external" href="http://bugs.python.org/8650">Issue #8650</a>: Make zlib module 64-bit clean. compress(), decompress() and
their incremental counterparts now raise OverflowError if given an input
larger than 4GB, instead of silently truncating the input and returning
an incorrect result.</li>
<li><a class="reference external" href="http://bugs.python.org/12050">Issue #12050</a>: zlib.decompressobj().decompress() now clears the unconsumed_tail
attribute when called without a max_length argument.</li>
<li><a class="reference external" href="http://bugs.python.org/12062">Issue #12062</a>: Fix a flushing bug when doing a certain type of I/O sequence
on a file opened in read+write mode (namely: reading, seeking a bit forward,
writing, then seeking before the previous write but still within buffered
data, and writing again).</li>
<li><a class="reference external" href="http://bugs.python.org/9971">Issue #9971</a>: Write an optimized implementation of BufferedReader.readinto().
Patch by John O’Connor.</li>
<li><a class="reference external" href="http://bugs.python.org/11799">Issue #11799</a>: urllib.request Authentication Handlers will raise a ValueError
when presented with an unsupported Authentication Scheme. Patch contributed
by Yuval Greenfield.</li>
<li><a class="reference external" href="http://bugs.python.org/10419">Issue #10419</a>, #6011: build_scripts command of distutils handles correctly
non-ASCII path (path to the Python executable). Open and write the script in
binary mode, but ensure that the shebang is decodable from UTF-8 and from the
encoding of the script.</li>
<li><a class="reference external" href="http://bugs.python.org/8498">Issue #8498</a>: In socket.accept(), allow to specify 0 as a backlog value in
order to accept exactly one connection. Patch by Daniel Evers.</li>
<li><a class="reference external" href="http://bugs.python.org/12011">Issue #12011</a>: signal.signal() and signal.siginterrupt() raise an OSError,
instead of a RuntimeError: OSError has an errno attribute.</li>
<li><a class="reference external" href="http://bugs.python.org/3709">Issue #3709</a>: add a flush_headers method to BaseHTTPRequestHandler, which
manages the sending of headers to output stream and flushing the internal
headers buffer. Patch contribution by Andrew Schaaf</li>
<li><a class="reference external" href="http://bugs.python.org/11743">Issue #11743</a>: Rewrite multiprocessing connection classes in pure Python.</li>
<li><a class="reference external" href="http://bugs.python.org/11164">Issue #11164</a>: Stop trying to use _xmlplus in the xml module.</li>
<li><a class="reference external" href="http://bugs.python.org/11888">Issue #11888</a>: Add log2 function to math module. Patch written by Mark
Dickinson.</li>
<li><a class="reference external" href="http://bugs.python.org/12012">Issue #12012</a>: ssl.PROTOCOL_SSLv2 becomes optional.</li>
<li><a class="reference external" href="http://bugs.python.org/8407">Issue #8407</a>: The signal handler writes the signal number as a single byte
instead of a nul byte into the wakeup file descriptor. So it is possible to
wait more than one signal and know which signals were raised.</li>
<li><a class="reference external" href="http://bugs.python.org/8407">Issue #8407</a>: Add pthread_kill(), sigpending() and sigwait() functions to the
signal module.</li>
<li><a class="reference external" href="http://bugs.python.org/11927">Issue #11927</a>: SMTP_SSL now uses port 465 by default as documented. Patch
by Kasun Herath.</li>
<li><a class="reference external" href="http://bugs.python.org/12002">Issue #12002</a>: ftplib’s abort() method raises TypeError.</li>
<li><a class="reference external" href="http://bugs.python.org/11916">Issue #11916</a>: Add a number of MacOSX specific definitions to the errno module.
Patch by Pierre Carrier.</li>
<li><a class="reference external" href="http://bugs.python.org/11999">Issue #11999</a>: fixed sporadic sync failure mailbox.Maildir due to its trying to
detect mtime changes by comparing to the system clock instead of to the
previous value of the mtime.</li>
<li><a class="reference external" href="http://bugs.python.org/11072">Issue #11072</a>: added MLSD command (RFC-3659) support to ftplib.</li>
<li><a class="reference external" href="http://bugs.python.org/8808">Issue #8808</a>: The IMAP4_SSL constructor now allows passing an SSLContext
parameter to control parameters of the secure channel. Patch by Sijin
Joseph.</li>
<li>ntpath.samefile failed to notice that “a.txt” and “A.TXT” refer to the same
file on Windows XP. As noticed in <a class="reference external" href="http://bugs.python.org/10684">issue #10684</a>.</li>
<li><a class="reference external" href="http://bugs.python.org/12000">Issue #12000</a>: When a SSL certificate has a subjectAltName without any
dNSName entry, ssl.match_hostname() should use the subject’s commonName.
Patch by Nicolas Bareil.</li>
<li><a class="reference external" href="http://bugs.python.org/10775">Issue #10775</a>: assertRaises, assertRaisesRegex, assertWarns, and
assertWarnsRegex now accept a keyword argument ‘msg’ when used as context
managers. Initial patch by Winston Ewert.</li>
<li><a class="reference external" href="http://bugs.python.org/10684">Issue #10684</a>: shutil.move used to delete a folder on case insensitive
filesystems when the source and destination name where the same except
for the case.</li>
<li><a class="reference external" href="http://bugs.python.org/11647">Issue #11647</a>: objects created using contextlib.contextmanager now support
more than one call to the function when used as a decorator. Initial patch
by Ysj Ray.</li>
<li><a class="reference external" href="http://bugs.python.org/11930">Issue #11930</a>: Removed deprecated time.accept2dyear variable.
Removed year >= 1000 restriction from datetime.strftime.</li>
<li>logging: don’t define QueueListener if Python has no thread support.</li>
<li>functools.cmp_to_key() now works with collections.Hashable().</li>
<li><a class="reference external" href="http://bugs.python.org/11277">Issue #11277</a>: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get
around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.</li>
<li><a class="reference external" href="http://bugs.python.org/8407">Issue #8407</a>: Add signal.pthread_sigmask() function to fetch and/or change the
signal mask of the calling thread.</li>
<li><a class="reference external" href="http://bugs.python.org/11858">Issue #11858</a>: configparser.ExtendedInterpolation expected lower-case section
names.</li>
<li><a class="reference external" href="http://bugs.python.org/11324">Issue #11324</a>: ConfigParser(interpolation=None) now works correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/11811">Issue #11811</a>: ssl.get_server_certificate() is now IPv6-compatible. Patch
by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/11763">Issue #11763</a>: don’t use difflib in TestCase.assertMultiLineEqual if the
strings are too long.</li>
<li><a class="reference external" href="http://bugs.python.org/11236">Issue #11236</a>: getpass.getpass responds to ctrl-c or ctrl-z on terminal.</li>
<li><a class="reference external" href="http://bugs.python.org/11856">Issue #11856</a>: Speed up parsing of JSON numbers.</li>
<li><a class="reference external" href="http://bugs.python.org/11005">Issue #11005</a>: threading.RLock()._release_save() raises a RuntimeError if the
lock was not acquired.</li>
<li><a class="reference external" href="http://bugs.python.org/11258">Issue #11258</a>: Speed up ctypes.util.find_library() under Linux by a factor
of 5 to 10. Initial patch by Jonas H.</li>
<li><a class="reference external" href="http://bugs.python.org/11382">Issue #11382</a>: Trivial system calls, such as dup() or pipe(), needn’t
release the GIL. Patch by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/11223">Issue #11223</a>: Add threading._info() function providing informations about
the thread implementation.</li>
<li><a class="reference external" href="http://bugs.python.org/11731">Issue #11731</a>: simplify/enhance email parser/generator API by introducing
policy objects.</li>
<li><a class="reference external" href="http://bugs.python.org/11768">Issue #11768</a>: The signal handler of the signal module only calls
Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or
parallel calls. PyErr_SetInterrupt() writes also into the wake up file.</li>
<li><a class="reference external" href="http://bugs.python.org/11492">Issue #11492</a>: fix several issues with header folding in the email package.</li>
<li><a class="reference external" href="http://bugs.python.org/11852">Issue #11852</a>: Add missing imports and update tests.</li>
<li><a class="reference external" href="http://bugs.python.org/11875">Issue #11875</a>: collections.OrderedDict’s __reduce__ was temporarily
mutating the object instead of just working on a copy.</li>
<li><a class="reference external" href="http://bugs.python.org/11467">Issue #11467</a>: Fix urlparse behavior when handling urls which contains scheme
specific part only digits. Patch by Santoso Wijaya.</li>
<li>collections.Counter().copy() now works correctly for subclasses.</li>
<li><a class="reference external" href="http://bugs.python.org/11474">Issue #11474</a>: Fix the bug with url2pathname() handling of ‘/C|/’ on Windows.
Patch by Santoso Wijaya.</li>
<li><a class="reference external" href="http://bugs.python.org/11684">Issue #11684</a>: complete email.parser bytes API by adding BytesHeaderParser.</li>
<li>The bz2 module now handles 4GiB+ input buffers correctly.</li>
<li><a class="reference external" href="http://bugs.python.org/9233">Issue #9233</a>: Fix json.loads(‘{}’) to return a dict (instead of a list), when
_json is not available.</li>
<li><a class="reference external" href="http://bugs.python.org/11830">Issue #11830</a>: Remove unnecessary introspection code in the decimal module.</li>
<li><a class="reference external" href="http://bugs.python.org/11703">Issue #11703</a>: urllib2.geturl() does not return correct url when the original
url contains #fragment.</li>
<li><a class="reference external" href="http://bugs.python.org/10019">Issue #10019</a>: Fixed regression in json module where an indent of 0 stopped
adding newlines and acted instead like ‘None’.</li>
<li><a class="reference external" href="http://bugs.python.org/11186">Issue #11186</a>: pydoc ignores a module if its name contains a surrogate
character in the index of modules.</li>
<li><a class="reference external" href="http://bugs.python.org/11815">Issue #11815</a>: Use a light-weight SimpleQueue for the result queue in
concurrent.futures.ProcessPoolExecutor.</li>
<li><a class="reference external" href="http://bugs.python.org/5162">Issue #5162</a>: Treat services like frozen executables to allow child spawning
from multiprocessing.forking on Windows.</li>
<li>logging.basicConfig now supports an optional ‘handlers’ argument taking an
iterable of handlers to be added to the root logger. Additional parameter
checks were also added to basicConfig.</li>
<li><a class="reference external" href="http://bugs.python.org/11814">Issue #11814</a>: Fix likely typo in multiprocessing.Pool._terminate().</li>
<li><a class="reference external" href="http://bugs.python.org/11747">Issue #11747</a>: Fix range formatting in difflib.context_diff() and
difflib.unified_diff().</li>
<li><a class="reference external" href="http://bugs.python.org/8428">Issue #8428</a>: Fix a race condition in multiprocessing.Pool when terminating
worker processes: new processes would be spawned while the pool is being
shut down. Patch by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/2650">Issue #2650</a>: re.escape() no longer escapes the ‘_’.</li>
<li><a class="reference external" href="http://bugs.python.org/11757">Issue #11757</a>: select.select() now raises ValueError when a negative timeout
is passed (previously, a select.error with EINVAL would be raised). Patch
by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/7311">Issue #7311</a>: fix html.parser to accept non-ASCII attribute values.</li>
<li><a class="reference external" href="http://bugs.python.org/11605">Issue #11605</a>: email.parser.BytesFeedParser was incorrectly converting
multipart subparts with an 8-bit CTE into unicode instead of preserving the
bytes.</li>
<li><a class="reference external" href="http://bugs.python.org/1690608">Issue #1690608</a>: email.util.formataddr is now RFC 2047 aware: it now has a
charset parameter that defaults to utf-8 and is used as the charset for RFC
2047 encoding when the realname contains non-ASCII characters.</li>
<li><a class="reference external" href="http://bugs.python.org/10963">Issue #10963</a>: Ensure that subprocess.communicate() never raises EPIPE.</li>
<li><a class="reference external" href="http://bugs.python.org/10791">Issue #10791</a>: Implement missing method GzipFile.read1(), allowing GzipFile
to be wrapped in a TextIOWrapper. Patch by Nadeem Vawda.</li>
<li><a class="reference external" href="http://bugs.python.org/11707">Issue #11707</a>: Added a fast C version of functools.cmp_to_key().
Patch by Filip Gruszczyński.</li>
<li><a class="reference external" href="http://bugs.python.org/11688">Issue #11688</a>: Add sqlite3.Connection.set_trace_callback(). Patch by
Torsten Landschoff.</li>
<li><a class="reference external" href="http://bugs.python.org/11746">Issue #11746</a>: Fix SSLContext.load_cert_chain() to accept elliptic curve
private keys.</li>
<li><a class="reference external" href="http://bugs.python.org/5863">Issue #5863</a>: Rewrite BZ2File in pure Python, and allow it to accept
file-like objects using a new <tt class="docutils literal"><span class="pre">fileobj</span></tt> constructor argument. Patch by
Nadeem Vawda.</li>
<li>unittest.TestCase.assertSameElements has been removed.</li>
<li>sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not
called yet: detect bootstrap (startup) issues earlier.</li>
<li><a class="reference external" href="http://bugs.python.org/11393">Issue #11393</a>: Add the new faulthandler module.</li>
<li><a class="reference external" href="http://bugs.python.org/11618">Issue #11618</a>: Fix the timeout logic in threading.Lock.acquire() under Windows.</li>
<li>Removed the ‘strict’ argument to email.parser.Parser, which has been
deprecated since Python 2.4.</li>
<li><a class="reference external" href="http://bugs.python.org/11256">Issue #11256</a>: Fix inspect.getcallargs on functions that take only keyword
arguments.</li>
<li><a class="reference external" href="http://bugs.python.org/11696">Issue #11696</a>: Fix ID generation in msilib.</li>
<li>itertools.accumulate now supports an optional <em>func</em> argument for
a user-supplied binary function.</li>
<li><a class="reference external" href="http://bugs.python.org/11692">Issue #11692</a>: Remove unnecessary demo functions in subprocess module.</li>
<li><a class="reference external" href="http://bugs.python.org/9696">Issue #9696</a>: Fix exception incorrectly raised by xdrlib.Packer.pack_int when
trying to pack a negative (in-range) integer.</li>
<li><a class="reference external" href="http://bugs.python.org/11675">Issue #11675</a>: multiprocessing.[Raw]Array objects created from an integer size
are now zeroed on creation. This matches the behaviour specified by the
documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/7639">Issue #7639</a>: Fix short file name generation in bdist_msi</li>
<li><a class="reference external" href="http://bugs.python.org/11635">Issue #11635</a>: Don’t use polling in worker threads and processes launched by
concurrent.futures.</li>
<li><a class="reference external" href="http://bugs.python.org/6811">Issue #6811</a>: Allow importlib to change a code object’s co_filename attribute
to match the path to where the source code currently is, not where the code
object originally came from.</li>
<li><a class="reference external" href="http://bugs.python.org/8754">Issue #8754</a>: Have importlib use the repr of a module name in error messages.</li>
<li><a class="reference external" href="http://bugs.python.org/11591">Issue #11591</a>: Prevent “import site” from modifying sys.path when python
was started with -S.</li>
<li>collections.namedtuple() now adds a _source attribute to the generated
class. This make the source more accessible than the outdated
“verbose” option which prints to stdout but doesn’t make the source
string available.</li>
<li><a class="reference external" href="http://bugs.python.org/11371">Issue #11371</a>: Mark getopt error messages as localizable. Patch by Filip
Gruszczyński.</li>
<li><a class="reference external" href="http://bugs.python.org/11333">Issue #11333</a>: Add __slots__ to collections ABCs.</li>
<li><a class="reference external" href="http://bugs.python.org/11628">Issue #11628</a>: cmp_to_key generated class should use __slots__.</li>
<li><a class="reference external" href="http://bugs.python.org/11666">Issue #11666</a>: let help() display named tuple attributes and methods
that start with a leading underscore.</li>
<li><a class="reference external" href="http://bugs.python.org/11662">Issue #11662</a>: Make urllib and urllib2 ignore redirections if the
scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).</li>
<li><a class="reference external" href="http://bugs.python.org/5537">Issue #5537</a>: Fix time2isoz() and time2netscape() functions of
httplib.cookiejar for expiration year greater than 2038 on 32-bit systems.</li>
<li><a class="reference external" href="http://bugs.python.org/4391">Issue #4391</a>: Use proper gettext plural forms in optparse.</li>
<li><a class="reference external" href="http://bugs.python.org/11127">Issue #11127</a>: Raise a TypeError when trying to pickle a socket object.</li>
<li><a class="reference external" href="http://bugs.python.org/11563">Issue #11563</a>: <tt class="docutils literal"><span class="pre">Connection:</span> <span class="pre">close</span></tt> header is sent by requests using URLOpener
class which helps in closing of sockets after connection is over. Patch
contributions by Jeff McNeil and Nadeem Vawda.</li>
<li><a class="reference external" href="http://bugs.python.org/11459">Issue #11459</a>: A <tt class="docutils literal"><span class="pre">bufsize</span></tt> value of 0 in subprocess.Popen() really creates
unbuffered pipes, such that select() works properly on them.</li>
<li><a class="reference external" href="http://bugs.python.org/5421">Issue #5421</a>: Fix misleading error message when one of socket.sendto()’s
arguments has the wrong type. Patch by Nikita Vetoshkin.</li>
<li><a class="reference external" href="http://bugs.python.org/10812">Issue #10812</a>: Add some extra posix functions to the os module.</li>
<li><a class="reference external" href="http://bugs.python.org/10979">Issue #10979</a>: unittest stdout buffering now works with class and module
setup and teardown.</li>
<li><a class="reference external" href="http://bugs.python.org/11243">Issue #11243</a>: fix the parameter querying methods of Message to work if
the headers contain un-encoded non-ASCII data.</li>
<li><a class="reference external" href="http://bugs.python.org/11401">Issue #11401</a>: fix handling of headers with no value; this fixes a regression
relative to Python2 and the result is now the same as it was in Python2.</li>
<li><a class="reference external" href="http://bugs.python.org/9298">Issue #9298</a>: base64 bodies weren’t being folded to line lengths less than 78,
which was a regression relative to Python2. Unlike Python2, the last line
of the folded body now ends with a carriage return.</li>
<li><a class="reference external" href="http://bugs.python.org/11560">Issue #11560</a>: shutil.unpack_archive now correctly handles the format
parameter. Patch by Evan Dandrea.</li>
<li><a class="reference external" href="http://bugs.python.org/5870">Issue #5870</a>: Add <a class="reference internal" href="../library/subprocess.html#subprocess.DEVNULL" title="subprocess.DEVNULL"><tt class="xref py py-obj docutils literal"><span class="pre">subprocess.DEVNULL</span></tt></a> constant.</li>
<li><a class="reference external" href="http://bugs.python.org/11133">Issue #11133</a>: fix two cases where inspect.getattr_static can trigger code
execution. Patch by Andreas Stührk.</li>
<li><a class="reference external" href="http://bugs.python.org/11569">Issue #11569</a>: use absolute path to the sysctl command in multiprocessing to
ensure that it will be found regardless of the shell PATH. This ensures
that multiprocessing.cpu_count works on default installs of MacOSX.</li>
<li><a class="reference external" href="http://bugs.python.org/11501">Issue #11501</a>: disutils.archive_utils.make_zipfile no longer fails if zlib is
not installed. Instead, the zipfile.ZIP_STORED compression is used to create
the ZipFile. Patch by Natalia B. Bidart.</li>
<li><a class="reference external" href="http://bugs.python.org/11289">Issue #11289</a>: <tt class="xref py py-obj docutils literal"><span class="pre">smtp.SMTP</span></tt> class is now a context manager so it can be used
in a <tt class="xref py py-obj docutils literal"><span class="pre">with</span></tt> statement. Contributed by Giampaolo Rodola.</li>
<li><a class="reference external" href="http://bugs.python.org/11554">Issue #11554</a>: Fixed support for Japanese codecs; previously the body output
encoding was not done if euc-jp or shift-jis was specified as the charset.</li>
<li><a class="reference external" href="http://bugs.python.org/11407">Issue #11407</a>: <tt class="xref py py-obj docutils literal"><span class="pre">TestCase.run</span></tt> returns the result object used or created.
Contributed by Janathan Hartley.</li>
<li><a class="reference external" href="http://bugs.python.org/11500">Issue #11500</a>: Fixed a bug in the OS X proxy bypass code for fully qualified
IP addresses in the proxy exception list.</li>
<li><a class="reference external" href="http://bugs.python.org/11491">Issue #11491</a>: dbm.error is no longer raised when dbm.open is called with
the “n” as the flag argument and the file exists. The behavior matches
the documentation and general logic.</li>
<li><a class="reference external" href="http://bugs.python.org/1162477">Issue #1162477</a>: Postel Principle adjustment to email date parsing: handle the
fact that some non-compliant MUAs use ‘.’ instead of ‘:’ in time specs.</li>
<li><a class="reference external" href="http://bugs.python.org/11131">Issue #11131</a>: Fix sign of zero in decimal.Decimal plus and minus
operations when the rounding mode is ROUND_FLOOR.</li>
<li><a class="reference external" href="http://bugs.python.org/9935">Issue #9935</a>: Speed up pickling of instances of user-defined classes.</li>
<li><a class="reference external" href="http://bugs.python.org/5622">Issue #5622</a>: Fix curses.wrapper to raise correct exception if curses
initialization fails.</li>
<li><a class="reference external" href="http://bugs.python.org/11408">Issue #11408</a>: In threading.Lock.acquire(), only call gettimeofday() when
really necessary. Patch by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/11391">Issue #11391</a>: Writing to a mmap object created with
<tt class="docutils literal"><span class="pre">mmap.PROT_READ|mmap.PROT_EXEC</span></tt> would segfault instead of raising a
TypeError. Patch by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/9795">Issue #9795</a>: add context manager protocol support for nntplib.NNTP class.</li>
<li><a class="reference external" href="http://bugs.python.org/11306">Issue #11306</a>: mailbox in certain cases adapts to an inability to open
certain files in read-write mode. Previously it detected this by
checking for EACCES, now it also checks for EROFS.</li>
<li><a class="reference external" href="http://bugs.python.org/11265">Issue #11265</a>: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors
on accept(), send() and recv().</li>
<li><a class="reference external" href="http://bugs.python.org/11377">Issue #11377</a>: Deprecate platform.popen() and reimplement it with os.popen().</li>
<li><a class="reference external" href="http://bugs.python.org/8513">Issue #8513</a>: On UNIX, subprocess supports bytes command string.</li>
<li><a class="reference external" href="http://bugs.python.org/10866">Issue #10866</a>: Add socket.sethostname(). Initial patch by Ross Lagerwall.</li>
<li><a class="reference external" href="http://bugs.python.org/11140">Issue #11140</a>: Lock.release() now raises a RuntimeError when attempting
to release an unacquired lock, as claimed in the threading documentation.
The _thread.error exception is now an alias of RuntimeError. Patch by
Filip Gruszczyński. Patch for _dummy_thread by Aymeric Augustin.</li>
<li><a class="reference external" href="http://bugs.python.org/8594">Issue #8594</a>: ftplib now provides a source_address parameter to specify which
(address, port) to bind to before connecting.</li>
<li><a class="reference external" href="http://bugs.python.org/11326">Issue #11326</a>: Add the missing connect_ex() implementation for SSL sockets,
and make it work for non-blocking connects.</li>
<li><a class="reference external" href="http://bugs.python.org/11297">Issue #11297</a>: Add collections.ChainMap().</li>
<li><a class="reference external" href="http://bugs.python.org/10755">Issue #10755</a>: Add the posix.flistdir() function. Patch by Ross Lagerwall.</li>
<li><a class="reference external" href="http://bugs.python.org/4761">Issue #4761</a>: Add the <tt class="docutils literal"><span class="pre">*at()</span></tt> family of functions (openat(), etc.) to the
posix module. Patch by Ross Lagerwall.</li>
<li><a class="reference external" href="http://bugs.python.org/7322">Issue #7322</a>: Trying to read from a socket’s file-like object after a timeout
occurred now raises an error instead of silently losing data.</li>
<li><a class="reference external" href="http://bugs.python.org/11291">Issue #11291</a>: poplib.POP no longer suppresses errors on quit().</li>
<li><a class="reference external" href="http://bugs.python.org/11177">Issue #11177</a>: asyncore’s create_socket() arguments can now be omitted.</li>
<li><a class="reference external" href="http://bugs.python.org/6064">Issue #6064</a>: Add a <tt class="docutils literal"><span class="pre">daemon</span></tt> keyword argument to the threading.Thread
and multiprocessing.Process constructors in order to override the
default behaviour of inheriting the daemonic property from the current
thread/process.</li>
<li><a class="reference external" href="http://bugs.python.org/10956">Issue #10956</a>: Buffered I/O classes retry reading or writing after a signal
has arrived and the handler returned successfully.</li>
<li><a class="reference external" href="http://bugs.python.org/10784">Issue #10784</a>: New os.getpriority() and os.setpriority() functions.</li>
<li><a class="reference external" href="http://bugs.python.org/11114">Issue #11114</a>: Fix catastrophic performance of tell() on text files (up
to 1000x faster in some cases). It is still one to two order of magnitudes
slower than binary tell().</li>
<li><a class="reference external" href="http://bugs.python.org/10882">Issue #10882</a>: Add os.sendfile function.</li>
<li><a class="reference external" href="http://bugs.python.org/10868">Issue #10868</a>: Allow usage of the register method of an ABC as a class
decorator.</li>
<li><a class="reference external" href="http://bugs.python.org/11224">Issue #11224</a>: Fixed a regression in tarfile that affected the file-like
objects returned by TarFile.extractfile() regarding performance, memory
consumption and failures with the stream interface.</li>
<li><a class="reference external" href="http://bugs.python.org/10924">Issue #10924</a>: Adding salt and Modular Crypt Format to crypt library.
Moved old C wrapper to _crypt, and added a Python wrapper with
enhanced salt generation and simpler API for password generation.</li>
<li><a class="reference external" href="http://bugs.python.org/11074">Issue #11074</a>: Make ‘tokenize’ so it can be reloaded.</li>
<li><a class="reference external" href="http://bugs.python.org/11085">Issue #11085</a>: Moved collections abstract base classes into a separate
module called collections.abc, following the pattern used by importlib.abc.
For backwards compatibility, the names are imported into the collections
module.</li>
<li><a class="reference external" href="http://bugs.python.org/4681">Issue #4681</a>: Allow mmap() to work on file sizes and offsets larger than
4GB, even on 32-bit builds. Initial patch by Ross Lagerwall, adapted for
32-bit Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/11169">Issue #11169</a>: compileall module uses repr() to format filenames and paths to
escape surrogate characters and show spaces.</li>
<li><a class="reference external" href="http://bugs.python.org/11089">Issue #11089</a>: Fix performance issue limiting the use of ConfigParser()
with large config files.</li>
<li><a class="reference external" href="http://bugs.python.org/10276">Issue #10276</a>: Fix the results of zlib.crc32() and zlib.adler32() on buffers
larger than 4GB. Patch by Nadeem Vawda.</li>
<li><a class="reference external" href="http://bugs.python.org/11388">Issue #11388</a>: Added a clear() method to MutableSequence</li>
<li><a class="reference external" href="http://bugs.python.org/11174">Issue #11174</a>: Add argparse.MetavarTypeHelpFormatter, which uses type names
for the names of optional and positional arguments in help messages.</li>
<li><a class="reference external" href="http://bugs.python.org/9348">Issue #9348</a>: Raise an early error if argparse nargs and metavar don’t match.</li>
<li><a class="reference external" href="http://bugs.python.org/9026">Issue #9026</a>: Fix order of argparse sub-commands in help messages.</li>
<li><a class="reference external" href="http://bugs.python.org/9347">Issue #9347</a>: Fix formatting for tuples in argparse type= error messages.</li>
<li><a class="reference external" href="http://bugs.python.org/12191">Issue #12191</a>: Added shutil.chown() to change user and/or group owner of a
given path also specifying their names.</li>
<li><a class="reference external" href="http://bugs.python.org/13988">Issue #13988</a>: The _elementtree accelerator is used whenever available.
Now xml.etree.cElementTree becomes a deprecated alias to ElementTree.</li>
</ul>
</div>
<div class="section" id="id62">
<h3>Build<a class="headerlink" href="#id62" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/6807">Issue #6807</a>: Run msisupport.mak earlier.</li>
<li><a class="reference external" href="http://bugs.python.org/10580">Issue #10580</a>: Minor grammar change in Windows installer.</li>
<li><a class="reference external" href="http://bugs.python.org/13326">Issue #13326</a>: Clean __pycache__ directories correctly on OpenBSD.</li>
<li>PEP 393: the configure option –with-wide-unicode is removed.</li>
<li><a class="reference external" href="http://bugs.python.org/12852">Issue #12852</a>: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008
functions on OpenBSD (e.g. fdopendir).</li>
<li><a class="reference external" href="http://bugs.python.org/11863">Issue #11863</a>: Remove support for legacy systems deprecated in Python 3.2
(following PEP 11). These systems are systems using Mach C Threads,
SunOS lightweight processes, GNU pth threads and IRIX threads.</li>
<li><a class="reference external" href="http://bugs.python.org/8746">Issue #8746</a>: Correct faulty configure checks so that os.chflags() and
os.lchflags() are once again built on systems that support these
functions (BSD and OS X). Also add new stat file flags for OS X
(UF_HIDDEN and UF_COMPRESSED).</li>
<li><a class="reference external" href="http://bugs.python.org/10645">Issue #10645</a>: Installing Python no longer creates a
Python-X.Y.Z-pyX.Y.egg-info file in the lib-dynload directory.</li>
<li>Do not accidentally include the directory containing sqlite.h twice when
building sqlite3.</li>
<li><a class="reference external" href="http://bugs.python.org/11217">Issue #11217</a>: For 64-bit/32-bit Mac OS X universal framework builds,
ensure “make install” creates symlinks in –prefix bin for the “-32”
files in the framework bin directory like the installer does.</li>
<li><a class="reference external" href="http://bugs.python.org/11347">Issue #11347</a>: Use –no-as-needed when linking libpython3.so.</li>
<li><a class="reference external" href="http://bugs.python.org/11411">Issue #11411</a>: Fix ‘make DESTDIR=’ with a relative destination.</li>
<li><a class="reference external" href="http://bugs.python.org/11268">Issue #11268</a>: Prevent Mac OS X Installer failure if Documentation
package had previously been installed.</li>
<li><a class="reference external" href="http://bugs.python.org/11495">Issue #11495</a>: OSF support is eliminated. It was deprecated in Python 3.2.</li>
</ul>
</div>
<div class="section" id="id63">
<h3>IDLE<a class="headerlink" href="#id63" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14409">Issue #14409</a>: IDLE now properly executes commands in the Shell window
when it cannot read the normal config files on startup and
has to use the built-in default key bindings.
There was previously a bug in one of the defaults.</li>
<li>IDLE can be launched as python -m idlelib</li>
<li><a class="reference external" href="http://bugs.python.org/3573">Issue #3573</a>: IDLE hangs when passing invalid command line args
(directory(ies) instead of file(s)) (Patch by Guilherme Polo)</li>
<li><a class="reference external" href="http://bugs.python.org/14200">Issue #14200</a>: IDLE shell crash on printing non-BMP unicode character.</li>
<li><a class="reference external" href="http://bugs.python.org/5219">Issue #5219</a>: Prevent event handler cascade in IDLE.</li>
<li><a class="reference external" href="http://bugs.python.org/964437">Issue #964437</a>: Make IDLE help window non-modal.
Patch by Guilherme Polo and Roger Serwy.</li>
<li><a class="reference external" href="http://bugs.python.org/13933">Issue #13933</a>: IDLE auto-complete did not work with some imported
module, like hashlib. (Patch by Roger Serwy)</li>
<li><a class="reference external" href="http://bugs.python.org/13506">Issue #13506</a>: Add ‘’ to path for IDLE Shell when started and restarted with Restart Shell.
Original patches by Marco Scataglini and Roger Serwy.</li>
<li><a class="reference external" href="http://bugs.python.org/4625">Issue #4625</a>: If IDLE cannot write to its recent file or breakpoint files,
display a message popup and continue rather than crash. Original patch by
Roger Serwy.</li>
<li><a class="reference external" href="http://bugs.python.org/8641">Issue #8641</a>: Update IDLE 3 syntax coloring to recognize b”..” and not u”..”.
Patch by Tal Einat.</li>
<li><a class="reference external" href="http://bugs.python.org/13296">Issue #13296</a>: Fix IDLE to clear compile __future__ flags on shell restart.
(Patch by Roger Serwy)</li>
<li><a class="reference external" href="http://bugs.python.org/9871">Issue #9871</a>: Prevent IDLE 3 crash when given byte stings
with invalid hex escape sequences, like b’x0’.
(Original patch by Claudiu Popa.)</li>
<li><a class="reference external" href="http://bugs.python.org/12636">Issue #12636</a>: IDLE reads the coding cookie when executing a Python script.</li>
<li><a class="reference external" href="http://bugs.python.org/12540">Issue #12540</a>: Prevent zombie IDLE processes on Windows due to changes
in os.kill().</li>
<li><a class="reference external" href="http://bugs.python.org/12590">Issue #12590</a>: IDLE editor window now always displays the first line
when opening a long file. With Tk 8.5, the first line was hidden.</li>
<li><a class="reference external" href="http://bugs.python.org/11088">Issue #11088</a>: don’t crash when using F5 to run a script in IDLE on MacOSX
with Tk 8.5.</li>
<li><a class="reference external" href="http://bugs.python.org/1028">Issue #1028</a>: Tk returns invalid Unicode null in %A: UnicodeDecodeError.
With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused
IDLE to exit. Converted to valid Unicode null in PythonCmd().</li>
<li><a class="reference external" href="http://bugs.python.org/11718">Issue #11718</a>: IDLE’s open module dialog couldn’t find the __init__.py
file in a package.</li>
</ul>
</div>
<div class="section" id="id64">
<h3>Tools/Demos<a class="headerlink" href="#id64" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/14053">Issue #14053</a>: patchcheck.py (“make patchcheck”) now works with MQ patches.
Patch by Francisco Martín Brugué.</li>
<li><a class="reference external" href="http://bugs.python.org/13930">Issue #13930</a>: 2to3 is now able to write its converted output files to another
directory tree as well as copying unchanged files and altering the file
suffix. See its new -o, -W and –add-suffix options. This makes it more
useful in many automated code translation workflows.</li>
<li><a class="reference external" href="http://bugs.python.org/13628">Issue #13628</a>: python-gdb.py is now able to retrieve more frames in the Python
traceback if Python is optimized.</li>
<li><a class="reference external" href="http://bugs.python.org/11996">Issue #11996</a>: libpython (gdb), replace “py-bt” command by “py-bt-full” and
add a smarter “py-bt” command printing a classic Python traceback.</li>
<li><a class="reference external" href="http://bugs.python.org/11179">Issue #11179</a>: Make ccbench work under Python 3.1 and 2.7 again.</li>
<li><a class="reference external" href="http://bugs.python.org/10639">Issue #10639</a>: reindent.py no longer converts newlines and will raise
an error if attempting to convert a file with mixed newlines.
“–newline” option added to specify new line character.</li>
</ul>
</div>
<div class="section" id="id65">
<h3>Extension Modules<a class="headerlink" href="#id65" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/16847">Issue #16847</a>: Fixed improper use of _PyUnicode_CheckConsistency() in
non-pydebug builds. Several extension modules now compile cleanly when
assert()s are enabled in standard builds (-DDEBUG flag).</li>
<li><a class="reference external" href="http://bugs.python.org/13840">Issue #13840</a>: The error message produced by ctypes.create_string_buffer
when given a Unicode string has been fixed.</li>
<li><a class="reference external" href="http://bugs.python.org/9975">Issue #9975</a>: socket: Fix incorrect use of flowinfo and scope_id. Patch by
Vilmos Nebehaj.</li>
<li><a class="reference external" href="http://bugs.python.org/7777">Issue #7777</a>: socket: Add Reliable Datagram Sockets (PF_RDS) support.</li>
<li><a class="reference external" href="http://bugs.python.org/13159">Issue #13159</a>: FileIO and BZ2Compressor/BZ2Decompressor now use a linear-time
buffer growth strategy instead of a quadratic-time one.</li>
<li><a class="reference external" href="http://bugs.python.org/10141">Issue #10141</a>: socket: Add SocketCAN (PF_CAN) support. Initial patch by
Matthias Fuchs, updated by Tiago Gonçalves.</li>
<li><a class="reference external" href="http://bugs.python.org/13070">Issue #13070</a>: Fix a crash when a TextIOWrapper caught in a reference cycle
would be finalized after the reference to its underlying BufferedRWPair’s
writer got cleared by the GC.</li>
<li><a class="reference external" href="http://bugs.python.org/12881">Issue #12881</a>: ctypes: Fix segfault with large structure field names.</li>
<li><a class="reference external" href="http://bugs.python.org/13058">Issue #13058</a>: ossaudiodev: fix a file descriptor leak on error. Patch by
Thomas Jarosch.</li>
<li><a class="reference external" href="http://bugs.python.org/13013">Issue #13013</a>: ctypes: Fix a reference leak in PyCArrayType_from_ctype.
Thanks to Suman Saha for finding the bug and providing a patch.</li>
<li><a class="reference external" href="http://bugs.python.org/13022">Issue #13022</a>: Fix: _multiprocessing.recvfd() doesn’t check that
file descriptor was actually received.</li>
<li><a class="reference external" href="http://bugs.python.org/1172711">Issue #1172711</a>: Add ‘long long’ support to the array module.
Initial patch by Oren Tirosh and Hirokazu Yamamoto.</li>
<li><a class="reference external" href="http://bugs.python.org/12483">Issue #12483</a>: ctypes: Fix a crash when the destruction of a callback
object triggers the garbage collector.</li>
<li><a class="reference external" href="http://bugs.python.org/12950">Issue #12950</a>: Fix passing file descriptors in multiprocessing, under
OpenIndiana/Illumos.</li>
<li><a class="reference external" href="http://bugs.python.org/12764">Issue #12764</a>: Fix a crash in ctypes when the name of a Structure field is not
a string.</li>
<li><a class="reference external" href="http://bugs.python.org/11241">Issue #11241</a>: subclasses of ctypes.Array can now be subclassed.</li>
<li><a class="reference external" href="http://bugs.python.org/9651">Issue #9651</a>: Fix a crash when ctypes.create_string_buffer(0) was passed to
some functions like file.write().</li>
<li><a class="reference external" href="http://bugs.python.org/10309">Issue #10309</a>: Define _GNU_SOURCE so that mremap() gets the proper
signature. Without this, architectures where sizeof void* != sizeof int are
broken. Patch given by Hallvard B Furuseth.</li>
<li><a class="reference external" href="http://bugs.python.org/12051">Issue #12051</a>: Fix segfault in json.dumps() while encoding highly-nested
objects using the C accelerations.</li>
<li><a class="reference external" href="http://bugs.python.org/12017">Issue #12017</a>: Fix segfault in json.loads() while decoding highly-nested
objects using the C accelerations.</li>
<li><a class="reference external" href="http://bugs.python.org/1838">Issue #1838</a>: Prevent segfault in ctypes, when _as_parameter_ on a class is set
to an instance of the class.</li>
</ul>
</div>
<div class="section" id="id66">
<h3>Tests<a class="headerlink" href="#id66" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/13125">Issue #13125</a>: Silence spurious test_lib2to3 output when in non-verbose mode.
Patch by Mikhail Novikov.</li>
<li><a class="reference external" href="http://bugs.python.org/13447">Issue #13447</a>: Add a test file to host regression tests for bugs in the
scripts found in the Tools directory.</li>
<li><a class="reference external" href="http://bugs.python.org/10881">Issue #10881</a>: Fix test_site failure with OS X framework builds.</li>
<li><a class="reference external" href="http://bugs.python.org/13901">Issue #13901</a>: Prevent test_distutils failures on OS X with –enable-shared.</li>
<li><a class="reference external" href="http://bugs.python.org/13862">Issue #13862</a>: Fix spurious failure in test_zlib due to runtime/compile time
minor versions not matching.</li>
<li><a class="reference external" href="http://bugs.python.org/12804">Issue #12804</a>: Fix test_socket and test_urllib2net failures when running tests
on a system without internet access.</li>
<li><a class="reference external" href="http://bugs.python.org/13726">Issue #13726</a>: Fix the ambiguous -S flag in regrtest. It is -o/–slow for slow
tests.</li>
<li><a class="reference external" href="http://bugs.python.org/11659">Issue #11659</a>: Fix ResourceWarning in test_subprocess introduced by #11459.
Patch by Ben Hayden.</li>
<li><a class="reference external" href="http://bugs.python.org/11577">Issue #11577</a>: fix ResourceWarning triggered by improved binhex test coverage</li>
<li><a class="reference external" href="http://bugs.python.org/11509">Issue #11509</a>: Significantly increase test coverage of fileinput.
Patch by Denver Coneybeare at PyCon 2011 Sprints.</li>
<li><a class="reference external" href="http://bugs.python.org/11689">Issue #11689</a>: Fix a variable scoping error in an sqlite3 test</li>
<li><a class="reference external" href="http://bugs.python.org/13786">Issue #13786</a>: Remove unimplemented ‘trace’ long option from regrtest.py.</li>
<li><a class="reference external" href="http://bugs.python.org/13725">Issue #13725</a>: Fix regrtest to recognize the documented -d flag.
Patch by Erno Tukia.</li>
<li><a class="reference external" href="http://bugs.python.org/13304">Issue #13304</a>: Skip test case if user site-packages disabled (-s or
PYTHONNOUSERSITE). (Patch by Carl Meyer)</li>
<li><a class="reference external" href="http://bugs.python.org/5661">Issue #5661</a>: Add a test for ECONNRESET/EPIPE handling to test_asyncore. Patch
by Xavier de Gaye.</li>
<li><a class="reference external" href="http://bugs.python.org/13218">Issue #13218</a>: Fix test_ssl failures on Debian/Ubuntu.</li>
<li>Re-enable lib2to3’s test_parser.py tests, though with an expected failure
(see issue 13125).</li>
<li><a class="reference external" href="http://bugs.python.org/12656">Issue #12656</a>: Add tests for IPv6 and Unix sockets to test_asyncore.</li>
<li><a class="reference external" href="http://bugs.python.org/6484">Issue #6484</a>: Add unit tests for mailcap module (patch by Gregory Nofi)</li>
<li><a class="reference external" href="http://bugs.python.org/11651">Issue #11651</a>: Improve the Makefile test targets to run more of the test suite
more quickly. The –multiprocess option is now enabled by default, reducing
the amount of time needed to run the tests. “make test” and “make quicktest”
now include some resource-intensive tests, but no longer run the test suite
twice to check for bugs in .pyc generation. Tools/scripts/run_test.py provides
an easy platform-independent way to run test suite with sensible defaults.</li>
<li><a class="reference external" href="http://bugs.python.org/12331">Issue #12331</a>: The test suite for the packaging module can now run from an
installed Python.</li>
<li><a class="reference external" href="http://bugs.python.org/12331">Issue #12331</a>: The test suite for lib2to3 can now run from an installed
Python.</li>
<li><a class="reference external" href="http://bugs.python.org/12626">Issue #12626</a>: In regrtest, allow to filter tests using a glob filter
with the <tt class="docutils literal"><span class="pre">-m</span></tt> (or <tt class="docutils literal"><span class="pre">--match</span></tt>) option. This works with all test cases
using the unittest module. This is useful with long test suites
such as test_io or test_subprocess.</li>
<li><a class="reference external" href="http://bugs.python.org/12624">Issue #12624</a>: It is now possible to fail after the first failure when
running in verbose mode (<tt class="docutils literal"><span class="pre">-v</span></tt> or <tt class="docutils literal"><span class="pre">-W</span></tt>), by using the <tt class="docutils literal"><span class="pre">--failfast</span></tt>
(or <tt class="docutils literal"><span class="pre">-G</span></tt>) option to regrtest. This is useful with long test suites
such as test_io or test_subprocess.</li>
<li><a class="reference external" href="http://bugs.python.org/12587">Issue #12587</a>: Correct faulty test file and reference in test_tokenize.
(Patch by Robert Xiao)</li>
<li><a class="reference external" href="http://bugs.python.org/12573">Issue #12573</a>: Add resource checks for dangling Thread and Process objects.</li>
<li><a class="reference external" href="http://bugs.python.org/12549">Issue #12549</a>: Correct test_platform to not fail when OS X returns ‘x86_64’
as the processor type on some Mac systems.</li>
<li>Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary
failure in name resolution.</li>
<li><a class="reference external" href="http://bugs.python.org/11812">Issue #11812</a>: Solve transient socket failure to connect to ‘localhost’
in test_telnetlib.py.</li>
<li>Solved a potential deadlock in test_telnetlib.py. Related to <a class="reference external" href="http://bugs.python.org/11812">issue #11812</a>.</li>
<li>Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and
an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder
Web site.</li>
<li>Avoid failing in test_urllibnet.test_bad_address when some overzealous
DNS service (e.g. OpenDNS) resolves a non-existent domain name. The test
is now skipped instead.</li>
<li><a class="reference external" href="http://bugs.python.org/12440">Issue #12440</a>: When testing whether some bits in SSLContext.options can be
reset, check the version of the OpenSSL headers Python was compiled against,
rather than the runtime version of the OpenSSL library.</li>
<li><a class="reference external" href="http://bugs.python.org/11512">Issue #11512</a>: Add a test suite for the cgitb module. Patch by Robbie Clemons.</li>
<li><a class="reference external" href="http://bugs.python.org/12497">Issue #12497</a>: Install test/data to prevent failures of the various codecmaps
tests.</li>
<li><a class="reference external" href="http://bugs.python.org/12496">Issue #12496</a>: Install test/capath directory to prevent test_connect_capath
testcase failure in test_ssl.</li>
<li><a class="reference external" href="http://bugs.python.org/12469">Issue #12469</a>: Run wakeup and pending signal tests in a subprocess to run the
test in a fresh process with only one thread and to not change signal
handling of the parent process.</li>
<li><a class="reference external" href="http://bugs.python.org/8716">Issue #8716</a>: Avoid crashes caused by Aqua Tk on OSX when attempting to run
test_tk or test_ttk_guionly under a username that is not currently logged
in to the console windowserver (as may be the case under buildbot or ssh).</li>
<li><a class="reference external" href="http://bugs.python.org/12407">Issue #12407</a>: Explicitly skip test_capi.EmbeddingTest under Windows.</li>
<li><a class="reference external" href="http://bugs.python.org/12400">Issue #12400</a>: regrtest -W doesn’t rerun the tests twice anymore, but captures
the output and displays it on failure instead. regrtest -v doesn’t print the
error twice anymore if there is only one error.</li>
<li><a class="reference external" href="http://bugs.python.org/12141">Issue #12141</a>: Install copies of template C module file so that
test_build_ext of test_distutils and test_command_build_ext of
test_packaging are no longer silently skipped when
run outside of a build directory.</li>
<li><a class="reference external" href="http://bugs.python.org/8746">Issue #8746</a>: Add additional tests for os.chflags() and os.lchflags().
Patch by Garrett Cooper.</li>
<li><a class="reference external" href="http://bugs.python.org/10736">Issue #10736</a>: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9
2.8 + on Mac OS X. (Patch by Ronald Oussoren)</li>
<li><a class="reference external" href="http://bugs.python.org/12057">Issue #12057</a>: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2,
iso2022_kr).</li>
<li><a class="reference external" href="http://bugs.python.org/12096">Issue #12096</a>: Fix a race condition in test_threading.test_waitfor(). Patch
written by Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/11614">Issue #11614</a>: import __hello__ prints “Hello World!”. Patch written by
Andreas Stührk.</li>
<li><a class="reference external" href="http://bugs.python.org/5723">Issue #5723</a>: Improve json tests to be executed with and without accelerations.</li>
<li><a class="reference external" href="http://bugs.python.org/12041">Issue #12041</a>: Make test_wait3 more robust.</li>
<li><a class="reference external" href="http://bugs.python.org/11873">Issue #11873</a>: Change regex in test_compileall to fix occasional failures when
when the randomly generated temporary path happened to match the regex.</li>
<li><a class="reference external" href="http://bugs.python.org/11958">Issue #11958</a>: Fix FTP tests for IPv6, bind to ”::1” instead of “localhost”.
Patch written by Charles-Francois Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/8407">Issue #8407</a>, #11859: Fix tests of test_io using threads and an alarm: use
pthread_sigmask() to ensure that the SIGALRM signal is received by the main
thread.</li>
<li><a class="reference external" href="http://bugs.python.org/11811">Issue #11811</a>: Factor out detection of IPv6 support on the current host
and make it available as <tt class="docutils literal"><span class="pre">test.support.IPV6_ENABLED</span></tt>. Patch by
Charles-François Natali.</li>
<li><a class="reference external" href="http://bugs.python.org/10914">Issue #10914</a>: Add a minimal embedding test to test_capi.</li>
<li><a class="reference external" href="http://bugs.python.org/11223">Issue #11223</a>: Skip test_lock_acquire_interruption() and
test_rlock_acquire_interruption() of test_threadsignals if a thread lock is
implemented using a POSIX mutex and a POSIX condition variable. A POSIX
condition variable cannot be interrupted by a signal (e.g. on Linux, the
futex system call is restarted).</li>
<li><a class="reference external" href="http://bugs.python.org/11790">Issue #11790</a>: Fix sporadic failures in test_multiprocessing.WithProcessesTestCondition.</li>
<li>Fix possible “file already exists” error when running the tests in parallel.</li>
<li><a class="reference external" href="http://bugs.python.org/11719">Issue #11719</a>: Fix message about unexpected test_msilib skip on non-Windows
platforms. Patch by Nadeem Vawda.</li>
<li><a class="reference external" href="http://bugs.python.org/11727">Issue #11727</a>: Add a –timeout option to regrtest: if a test takes more than
TIMEOUT seconds, dumps the traceback of all threads and exits.</li>
<li><a class="reference external" href="http://bugs.python.org/11653">Issue #11653</a>: fix -W with -j in regrtest.</li>
<li>The email test suite now lives in the Lib/test/test_email package. The test
harness code has also been modernized to allow use of new unittest features.</li>
<li>regrtest now discovers test packages as well as test modules.</li>
<li><a class="reference external" href="http://bugs.python.org/11577">Issue #11577</a>: improve test coverage of binhex.py. Patch by Arkady Koplyarov.</li>
<li>New test_crashers added to exercise the scripts in the Lib/test/crashers
directory and confirm they fail as expected</li>
<li><a class="reference external" href="http://bugs.python.org/11578">Issue #11578</a>: added test for the timeit module. Patch by Michael Henry.</li>
<li><a class="reference external" href="http://bugs.python.org/11503">Issue #11503</a>: improve test coverage of posixpath.py. Patch by Evan Dandrea.</li>
<li><a class="reference external" href="http://bugs.python.org/11505">Issue #11505</a>: improves test coverage of string.py, increases granularity of
string.Formatter tests. Initial patch by Alicia Arlen.</li>
<li><a class="reference external" href="http://bugs.python.org/11548">Issue #11548</a>: Improve test coverage of the shutil module. Patch by
Evan Dandrea.</li>
<li><a class="reference external" href="http://bugs.python.org/11554">Issue #11554</a>: Reactivated test_email_codecs.</li>
<li><a class="reference external" href="http://bugs.python.org/11505">Issue #11505</a>: improves test coverage of string.py. Patch by Alicia
Arlen</li>
<li><a class="reference external" href="http://bugs.python.org/11490">Issue #11490</a>: test_subprocess.test_leaking_fds_on_error no longer gives a
false positive if the last directory in the path is inaccessible.</li>
<li><a class="reference external" href="http://bugs.python.org/11223">Issue #11223</a>: Fix test_threadsignals to fail, not hang, when the
non-semaphore implementation of locks is used under POSIX.</li>
<li><a class="reference external" href="http://bugs.python.org/10911">Issue #10911</a>: Add tests on CGI with non-ASCII characters. Patch written by
Pierre Quentel.</li>
<li><a class="reference external" href="http://bugs.python.org/9931">Issue #9931</a>: Fix hangs in GUI tests under Windows in certain conditions.
Patch by Hirokazu Yamamoto.</li>
<li><a class="reference external" href="http://bugs.python.org/10512">Issue #10512</a>: Properly close sockets under test.test_cgi.</li>
<li><a class="reference external" href="http://bugs.python.org/10992">Issue #10992</a>: Make tests pass under coverage.</li>
<li><a class="reference external" href="http://bugs.python.org/10826">Issue #10826</a>: Prevent sporadic failure in test_subprocess on Solaris due
to open door files.</li>
<li><a class="reference external" href="http://bugs.python.org/10990">Issue #10990</a>: Prevent tests from clobbering a set trace function.</li>
</ul>
</div>
<div class="section" id="id67">
<h3>C-API<a class="headerlink" href="#id67" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/13452">Issue #13452</a>: PyUnicode_EncodeDecimal() doesn’t support error handlers
different than “strict” anymore. The caller was unable to compute the
size of the output buffer: it depends on the error handler.</li>
<li><a class="reference external" href="http://bugs.python.org/13560">Issue #13560</a>: Add PyUnicode_DecodeLocale(), PyUnicode_DecodeLocaleAndSize()
and PyUnicode_EncodeLocale() functions to the C API to decode/encode from/to
the current locale encoding.</li>
<li><a class="reference external" href="http://bugs.python.org/10831">Issue #10831</a>: PyUnicode_FromFormat() supports %li, %lli and %zi formats.</li>
<li><a class="reference external" href="http://bugs.python.org/11246">Issue #11246</a>: Fix PyUnicode_FromFormat(“%V”) to decode the byte string from
UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode).
Patch written by Ray Allen.</li>
<li><a class="reference external" href="http://bugs.python.org/10830">Issue #10830</a>: Fix PyUnicode_FromFormatV(“%c”) for non-BMP characters on
narrow build.</li>
<li>Add PyObject_GenericGetDict and PyObject_GeneriSetDict. They are generic
implementations for the getter and setter of a <tt class="docutils literal"><span class="pre">__dict__</span></tt> descriptor of C
types.</li>
<li><a class="reference external" href="http://bugs.python.org/13727">Issue #13727</a>: Add 3 macros to access PyDateTime_Delta members:
PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS,
PyDateTime_DELTA_GET_MICROSECONDS.</li>
<li><a class="reference external" href="http://bugs.python.org/10542">Issue #10542</a>: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE,
Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE,
Py_UNICODE_JOIN_SURROGATES.</li>
<li><a class="reference external" href="http://bugs.python.org/12724">Issue #12724</a>: Add Py_RETURN_NOTIMPLEMENTED macro for returning NotImplemented.</li>
<li>PY_PATCHLEVEL_REVISION has been removed, since it’s meaningless with
Mercurial.</li>
<li><a class="reference external" href="http://bugs.python.org/12173">Issue #12173</a>: The first argument of PyImport_ImportModuleLevel is now <tt class="xref py py-obj docutils literal"><span class="pre">const</span>
<span class="pre">char</span> <span class="pre">*</span></tt> instead of <tt class="xref py py-obj docutils literal"><span class="pre">char</span> <span class="pre">*</span></tt>.</li>
<li><a class="reference external" href="http://bugs.python.org/12380">Issue #12380</a>: PyArg_ParseTuple now accepts a bytearray for the ‘c’ format.</li>
</ul>
</div>
<div class="section" id="id68">
<h3>Documentation<a class="headerlink" href="#id68" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><a class="reference external" href="http://bugs.python.org/13989">Issue #13989</a>: Document that GzipFile does not support text mode, and give a
more helpful error message when opened with an invalid mode string.</li>
<li><a class="reference external" href="http://bugs.python.org/13921">Issue #13921</a>: Undocument and clean up sqlite3.OptimizedUnicode,
which is obsolete in Python 3.x. It’s now aliased to str for
backwards compatibility.</li>
<li><a class="reference external" href="http://bugs.python.org/12102">Issue #12102</a>: Document that buffered files must be flushed before being used
with mmap. Patch by Steffen Daode Nurpmeso.</li>
<li><a class="reference external" href="http://bugs.python.org/8982">Issue #8982</a>: Improve the documentation for the argparse Namespace object.</li>
<li><a class="reference external" href="http://bugs.python.org/9343">Issue #9343</a>: Document that argparse parent parsers must be configured before
their children.</li>
<li><a class="reference external" href="http://bugs.python.org/13498">Issue #13498</a>: Clarify docs of os.makedirs()’s exist_ok argument. Done with
great native-speaker help from R. David Murray.</li>
<li>Issues #13491 and #13995: Fix many errors in sqlite3 documentation.
Initial patch for #13491 by Johannes Vogel.</li>
<li><a class="reference external" href="http://bugs.python.org/13402">Issue #13402</a>: Document absoluteness of sys.executable.</li>
<li><a class="reference external" href="http://bugs.python.org/13883">Issue #13883</a>: PYTHONCASEOK also works on OS X.</li>
<li><a class="reference external" href="http://bugs.python.org/9021">Issue #9021</a>: Add an introduction to the copy module documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/6005">Issue #6005</a>: Examples in the socket library documentation use sendall, where
relevant, instead send method.</li>
<li><a class="reference external" href="http://bugs.python.org/12798">Issue #12798</a>: Updated the mimetypes documentation.</li>
<li><a class="reference external" href="http://bugs.python.org/12949">Issue #12949</a>: Document the kwonlyargcount argument for the PyCode_New
C API function.</li>
<li><a class="reference external" href="http://bugs.python.org/13513">Issue #13513</a>: Fix io.IOBase documentation to correctly link to the
io.IOBase.readline method instead of the readline module.</li>
<li><a class="reference external" href="http://bugs.python.org/13237">Issue #13237</a>: Reorganise subprocess documentation to emphasise convenience
functions and the most commonly needed arguments to Popen.</li>
<li><a class="reference external" href="http://bugs.python.org/13141">Issue #13141</a>: Demonstrate recommended style for socketserver examples.</li>
<li><a class="reference external" href="http://bugs.python.org/11818">Issue #11818</a>: Fix tempfile examples for Python 3.</li>
</ul>
<p><strong>(For information about older versions, consult the HISTORY file.)</strong></p>
</div>
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<h3><a href="../contents.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Changelog</a><ul>
<li><a class="reference internal" href="#python-3-3-2">Python 3.3.2</a><ul>
<li><a class="reference internal" href="#core-and-builtins">Core and Builtins</a></li>
<li><a class="reference internal" href="#library">Library</a></li>
<li><a class="reference internal" href="#idle">IDLE</a></li>
<li><a class="reference internal" href="#tests">Tests</a></li>
<li><a class="reference internal" href="#documentation">Documentation</a></li>
<li><a class="reference internal" href="#build">Build</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-1">Python 3.3.1</a><ul>
<li><a class="reference internal" href="#id1">Build</a></li>
<li><a class="reference internal" href="#id2">IDLE</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-1-release-candidate-1">Python 3.3.1 release candidate 1</a><ul>
<li><a class="reference internal" href="#id3">Core and Builtins</a></li>
<li><a class="reference internal" href="#id4">Library</a></li>
<li><a class="reference internal" href="#id5">IDLE</a></li>
<li><a class="reference internal" href="#id6">Tests</a></li>
<li><a class="reference internal" href="#id7">Build</a></li>
<li><a class="reference internal" href="#c-api">C-API</a></li>
<li><a class="reference internal" href="#id8">Documentation</a></li>
<li><a class="reference internal" href="#tools-demos">Tools/Demos</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0">Python 3.3.0</a><ul>
<li><a class="reference internal" href="#id9">Core and Builtins</a></li>
<li><a class="reference internal" href="#extension-modules">Extension Modules</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-release-candidate-3">Python 3.3.0 Release Candidate 3</a><ul>
<li><a class="reference internal" href="#id10">Core and Builtins</a></li>
<li><a class="reference internal" href="#id11">Library</a></li>
<li><a class="reference internal" href="#id12">Extension Modules</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-release-candidate-2">Python 3.3.0 Release Candidate 2</a><ul>
<li><a class="reference internal" href="#id13">Core and Builtins</a></li>
<li><a class="reference internal" href="#id14">Library</a></li>
<li><a class="reference internal" href="#id15">Build</a></li>
<li><a class="reference internal" href="#id16">Documentation</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-release-candidate-1">Python 3.3.0 Release Candidate 1</a><ul>
<li><a class="reference internal" href="#id17">Core and Builtins</a></li>
<li><a class="reference internal" href="#id18">Library</a></li>
<li><a class="reference internal" href="#id19">IDLE</a></li>
<li><a class="reference internal" href="#id20">Documentation</a></li>
<li><a class="reference internal" href="#id21">Tests</a></li>
<li><a class="reference internal" href="#id22">Build</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-beta-2">Python 3.3.0 Beta 2</a><ul>
<li><a class="reference internal" href="#id23">Core and Builtins</a></li>
<li><a class="reference internal" href="#id24">Library</a></li>
<li><a class="reference internal" href="#id25">C API</a></li>
<li><a class="reference internal" href="#id26">Extension Modules</a></li>
<li><a class="reference internal" href="#id27">IDLE</a></li>
<li><a class="reference internal" href="#id28">Tools/Demos</a></li>
<li><a class="reference internal" href="#id29">Documentation</a></li>
<li><a class="reference internal" href="#id30">Tests</a></li>
<li><a class="reference internal" href="#id31">Build</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-beta-1">Python 3.3.0 Beta 1</a><ul>
<li><a class="reference internal" href="#id32">Core and Builtins</a></li>
<li><a class="reference internal" href="#id33">Library</a></li>
<li><a class="reference internal" href="#id34">C-API</a></li>
<li><a class="reference internal" href="#id35">Extension Modules</a></li>
<li><a class="reference internal" href="#id36">IDLE</a></li>
<li><a class="reference internal" href="#id37">Documentation</a></li>
<li><a class="reference internal" href="#id38">Tests</a></li>
<li><a class="reference internal" href="#id39">Build</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-alpha-4">Python 3.3.0 Alpha 4</a><ul>
<li><a class="reference internal" href="#id40">Core and Builtins</a></li>
<li><a class="reference internal" href="#id41">Library</a></li>
<li><a class="reference internal" href="#id42">IDLE</a></li>
<li><a class="reference internal" href="#id43">Tools/Demos</a></li>
<li><a class="reference internal" href="#id44">Build</a></li>
<li><a class="reference internal" href="#id45">C-API</a></li>
<li><a class="reference internal" href="#id46">Documentation</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-alpha-3">Python 3.3.0 Alpha 3</a><ul>
<li><a class="reference internal" href="#id47">Core and Builtins</a></li>
<li><a class="reference internal" href="#id48">Library</a></li>
<li><a class="reference internal" href="#id49">Build</a></li>
<li><a class="reference internal" href="#id50">Tests</a></li>
<li><a class="reference internal" href="#id51">IDLE</a></li>
<li><a class="reference internal" href="#id52">Tools / Demos</a></li>
<li><a class="reference internal" href="#id53">C-API</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-alpha-2">Python 3.3.0 Alpha 2</a><ul>
<li><a class="reference internal" href="#id54">Core and Builtins</a></li>
<li><a class="reference internal" href="#id55">Library</a></li>
<li><a class="reference internal" href="#id56">Build</a></li>
<li><a class="reference internal" href="#id57">Documentation</a></li>
<li><a class="reference internal" href="#id58">Extension Modules</a></li>
<li><a class="reference internal" href="#id59">Tests</a></li>
</ul>
</li>
<li><a class="reference internal" href="#python-3-3-0-alpha-1">Python 3.3.0 Alpha 1</a><ul>
<li><a class="reference internal" href="#id60">Core and Builtins</a></li>
<li><a class="reference internal" href="#id61">Library</a></li>
<li><a class="reference internal" href="#id62">Build</a></li>
<li><a class="reference internal" href="#id63">IDLE</a></li>
<li><a class="reference internal" href="#id64">Tools/Demos</a></li>
<li><a class="reference internal" href="#id65">Extension Modules</a></li>
<li><a class="reference internal" href="#id66">Tests</a></li>
<li><a class="reference internal" href="#id67">C-API</a></li>
<li><a class="reference internal" href="#id68">Documentation</a></li>
</ul>
</li>
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