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<li class="toctree-l1 current"><a class="current reference internal" href="#">Developer’s notes</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#source-code">Source code</a></li>
<li class="toctree-l2"><a class="reference internal" href="#direction">Direction</a></li>
<li class="toctree-l2"><a class="reference internal" href="#contribute">Contribute</a></li>
<li class="toctree-l2"><a class="reference internal" href="#changes">Changes</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#id2">1.7.1 (2017-10-22)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id3">1.7.0 (2016-01-12)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id4">1.6.2 (2015-02-15)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id5">1.6.1 (2015-02-08)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id6">1.6.0 (2015-02-06)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id7">1.5.7 (2014-05-29)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id8">1.5.6 (2014-04-14)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id9">1.5.5 (2014-04-10)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id10">1.5.4 (2014-04-07)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id11">1.5.3 (2014-04-04)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id12">1.5.2 (2014-04-04)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id13">1.5.1 (2014-03-27)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id14">1.5 (2014-03-26)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id15">1.4.6 (2013-07-02)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id16">1.4.5 (2013-03-06)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id17">1.4.4 (2013-02-24)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id18">1.4.3 (2013-02-22)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id19">1.4.2 (2013-02-10)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id20">1.4.1 (2013-01-18)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id21">1.4 (2012-12-22)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id22">1.3.4 (2012-12-18)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id23">1.3.3 (2012-06-27)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id24">1.3.2 (2012-06-26)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id25">1.3.1 (2012-06-18)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id26">1.3 (2012-06-15)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id27">1.2 (2012-06-01)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id28">1.1 (2012-05-24)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id29">1.0.1 (2012-04-06)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id30">1.0 (2012-04-04)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id31">0.7.0 (2012-03-26)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id32">0.6.1 (2010-10-03)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id33">0.6.0 (2010-09-19)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id34">0.5.0 (2010-02-17)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id38">0.4.2 (2009-10-22)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id39">0.4 (2009-10-20)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id45">0.3.1 (2009-09-14)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id46">0.2 (2007-10-16)</a></li>
<li class="toctree-l3"><a class="reference internal" href="#id47">0.1 (2006-10-01)</a></li>
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<div class="section" id="developer-s-notes">
<h1>Developer’s notes<a class="headerlink" href="#developer-s-notes" title="Permalink to this headline">¶</a></h1>
<div class="section" id="source-code">
<h2>Source code<a class="headerlink" href="#source-code" title="Permalink to this headline">¶</a></h2>
<p>The source code is currently <a class="reference external" href="https://github.com/pycqa/pep8">available on GitHub</a> under the terms and
conditions of the <a class="reference internal" href="index.html#license"><span class="std std-ref">Expat license</span></a>. Fork away!</p>
<ul class="simple">
<li><a class="reference external" href="https://github.com/pycqa/pep8">Source code</a> and
<a class="reference external" href="https://github.com/pycqa/pep8/issues">issue tracker</a> on GitHub.</li>
<li><a class="reference external" href="http://travis-ci.org/pycqa/pep8">Continuous tests</a> against Python
2.6 through 3.4 and PyPy, on <a class="reference external" href="http://about.travis-ci.org/">Travis-CI platform</a>.</li>
</ul>
</div>
<div class="section" id="direction">
<h2>Direction<a class="headerlink" href="#direction" title="Permalink to this headline">¶</a></h2>
<p>Some high-level aims and directions to bear in mind for contributions:</p>
<ul class="simple">
<li><code class="docutils literal notranslate"><span class="pre">pep8</span></code> is intended to be as fast as possible.
Using the <code class="docutils literal notranslate"><span class="pre">ast</span></code> module defeats that purpose.
The <a class="reference external" href="https://github.com/flintwork/pep8-naming">pep8-naming</a> plugin exists for this sort of functionality.</li>
<li>If you want to provide extensibility / plugins,
please see <a class="reference external" href="https://gitlab.com/pycqa/flake8">flake8</a> -
<code class="docutils literal notranslate"><span class="pre">pep8</span></code> doesn’t want or need a plugin architecture.</li>
<li>Python 2.6 support is still deemed important.</li>
<li><code class="docutils literal notranslate"><span class="pre">pep8</span></code> aims to have no external dependencies.</li>
</ul>
</div>
<div class="section" id="contribute">
<h2>Contribute<a class="headerlink" href="#contribute" title="Permalink to this headline">¶</a></h2>
<p>You can add checks to this program by writing plugins. Each plugin is
a simple function that is called for each line of source code, either
physical or logical.</p>
<p>Physical line:</p>
<ul class="simple">
<li>Raw line of text from the input file.</li>
</ul>
<p>Logical line:</p>
<ul class="simple">
<li>Multi-line statements converted to a single line.</li>
<li>Stripped left and right.</li>
<li>Contents of strings replaced with <code class="docutils literal notranslate"><span class="pre">"xxx"</span></code> of same length.</li>
<li>Comments removed.</li>
</ul>
<p>The check function requests physical or logical lines by the name of
the first argument:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">def</span> <span class="nf">maximum_line_length</span><span class="p">(</span><span class="n">physical_line</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">extraneous_whitespace</span><span class="p">(</span><span class="n">logical_line</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">blank_lines</span><span class="p">(</span><span class="n">logical_line</span><span class="p">,</span> <span class="n">blank_lines</span><span class="p">,</span> <span class="n">indent_level</span><span class="p">,</span> <span class="n">line_number</span><span class="p">)</span>
</pre></div>
</div>
<p>The last example above demonstrates how check plugins can request
additional information with extra arguments. All attributes of the
<a class="reference internal" href="api.html#pep8.Checker" title="pep8.Checker"><code class="xref py py-class docutils literal notranslate"><span class="pre">Checker</span></code></a> object are available. Some examples:</p>
<ul class="simple">
<li><code class="docutils literal notranslate"><span class="pre">lines</span></code>: a list of the raw lines from the input file</li>
<li><code class="docutils literal notranslate"><span class="pre">tokens</span></code>: the tokens that contribute to this logical line</li>
<li><code class="docutils literal notranslate"><span class="pre">line_number</span></code>: line number in the input file</li>
<li><code class="docutils literal notranslate"><span class="pre">total_lines</span></code>: number of lines in the input file</li>
<li><code class="docutils literal notranslate"><span class="pre">blank_lines</span></code>: blank lines before this one</li>
<li><code class="docutils literal notranslate"><span class="pre">indent_char</span></code>: indentation character in this file (<code class="docutils literal notranslate"><span class="pre">"</span> <span class="pre">"</span></code> or <code class="docutils literal notranslate"><span class="pre">"\t"</span></code>)</li>
<li><code class="docutils literal notranslate"><span class="pre">indent_level</span></code>: indentation (with tabs expanded to multiples of 8)</li>
<li><code class="docutils literal notranslate"><span class="pre">previous_indent_level</span></code>: indentation on previous line</li>
<li><code class="docutils literal notranslate"><span class="pre">previous_logical</span></code>: previous logical line</li>
</ul>
<p>Check plugins can also maintain per-file state. If you need this, declare
a parameter named <code class="docutils literal notranslate"><span class="pre">checker_state</span></code>. You will be passed a dict, which will be
the same one for all lines in the same file but a different one for different
files. Each check plugin gets its own dict, so you don’t need to worry about
clobbering the state of other plugins.</p>
<p>The docstring of each check function shall be the relevant part of
text from <a class="reference external" href="http://www.python.org/dev/peps/pep-0008/">PEP 8</a>. It is printed if the user enables <code class="docutils literal notranslate"><span class="pre">--show-pep8</span></code>.
Several docstrings contain examples directly from the <a class="reference external" href="http://www.python.org/dev/peps/pep-0008/">PEP 8</a> document.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Okay</span><span class="p">:</span> <span class="n">spam</span><span class="p">(</span><span class="n">ham</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="p">{</span><span class="n">eggs</span><span class="p">:</span> <span class="mi">2</span><span class="p">})</span>
<span class="n">E201</span><span class="p">:</span> <span class="n">spam</span><span class="p">(</span> <span class="n">ham</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="p">{</span><span class="n">eggs</span><span class="p">:</span> <span class="mi">2</span><span class="p">})</span>
</pre></div>
</div>
<p>These examples are verified automatically when pep8.py is run with the
<code class="docutils literal notranslate"><span class="pre">--doctest</span></code> option. You can add examples for your own check functions.
The format is simple: <code class="docutils literal notranslate"><span class="pre">"Okay"</span></code> or error/warning code followed by colon
and space, the rest of the line is example source code. If you put <code class="docutils literal notranslate"><span class="pre">'r'</span></code>
before the docstring, you can use <code class="docutils literal notranslate"><span class="pre">\n</span></code> for newline and <code class="docutils literal notranslate"><span class="pre">\t</span></code> for tab.</p>
<p>Then be sure to pass the tests:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ python pep8.py --testsuite testsuite
$ python pep8.py --doctest
$ python pep8.py --verbose pep8.py
</pre></div>
</div>
</div>
<div class="section" id="changes">
<h2>Changes<a class="headerlink" href="#changes" title="Permalink to this headline">¶</a></h2>
<div class="section" id="id2">
<h3>1.7.1 (2017-10-22)<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h3>
<p>Changes:</p>
<ul class="simple">
<li>Prominently note via warning message that the tool is no longer released as
<code class="docutils literal notranslate"><span class="pre">pep8</span></code> and will only be fixed in the <code class="docutils literal notranslate"><span class="pre">pycodestyle</span></code> package</li>
</ul>
</div>
<div class="section" id="id3">
<h3>1.7.0 (2016-01-12)<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h3>
<p>Announcements:</p>
<ul class="simple">
<li>Repository moved to PyCQA Organization on GitHub:
<a class="reference external" href="https://github.com/pycqa/pep8">https://github.com/pycqa/pep8</a></li>
</ul>
<p>Changes:</p>
<ul class="simple">
<li>Reverted the fix in #368, “options passed on command line are only ones
accepted” feature. This has many unintended consequences in pep8 and flake8
and needs to be reworked when I have more time.</li>
<li>Added support for Python 3.5. (Issue #420 & #459)</li>
<li>Added support for multi-line config_file option parsing. (Issue #429)</li>
<li>Improved parameter parsing. (Issues #420 & #456)</li>
</ul>
<p>Bugs:</p>
<ul class="simple">
<li>Fixed BytesWarning on Python 3. (Issue #459)</li>
</ul>
</div>
<div class="section" id="id4">
<h3>1.6.2 (2015-02-15)<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h3>
<p>Changes:</p>
<ul class="simple">
<li>Added check for breaking around a binary operator. (Issue #197, Pull #305)</li>
</ul>
<p>Bugs:</p>
<ul class="simple">
<li>Restored config_file parameter in process_options(). (Issue #380)</li>
</ul>
</div>
<div class="section" id="id5">
<h3>1.6.1 (2015-02-08)<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h3>
<p>Changes:</p>
<ul class="simple">
<li>Assign variables before referenced. (Issue #287)</li>
</ul>
<p>Bugs:</p>
<ul class="simple">
<li>Exception thrown due to unassigned <code class="docutils literal notranslate"><span class="pre">local_dir</span></code> variable. (Issue #377)</li>
</ul>
</div>
<div class="section" id="id6">
<h3>1.6.0 (2015-02-06)<a class="headerlink" href="#id6" title="Permalink to this headline">¶</a></h3>
<p>News:</p>
<ul class="simple">
<li>Ian Lee <<a class="reference external" href="mailto:ianlee1521%40gmail.com">ianlee1521<span>@</span>gmail<span>.</span>com</a>> joined the project as a maintainer.</li>
</ul>
<p>Changes:</p>
<ul class="simple">
<li>Report E731 for lambda assignment. (Issue #277)</li>
<li>Report E704 for one-liner def instead of E701.
Do not report this error in the default configuration. (Issue #277)</li>
<li>Replace codes E111, E112 and E113 with codes E114, E115 and E116
for bad indentation of comments. (Issue #274)</li>
<li>Report E266 instead of E265 when the block comment starts with
multiple <code class="docutils literal notranslate"><span class="pre">#</span></code>. (Issue #270)</li>
<li>Report E402 for import statements not at the top of the file. (Issue #264)</li>
<li>Do not enforce whitespaces around <code class="docutils literal notranslate"><span class="pre">**</span></code> operator. (Issue #292)</li>
<li>Strip whitespace from around paths during normalization. (Issue #339 / #343)</li>
<li>Update <code class="docutils literal notranslate"><span class="pre">--format</span></code> documentation. (Issue #198 / Pull Request #310)</li>
<li>Add <code class="docutils literal notranslate"><span class="pre">.tox/</span></code> to default excludes. (Issue #335)</li>
<li>Do not report E121 or E126 in the default configuration. (Issues #256 / #316)</li>
<li>Allow spaces around the equals sign in an annotated function. (Issue #357)</li>
<li>Allow trailing backslash if in an inline comment. (Issue #374)</li>
<li>If <code class="docutils literal notranslate"><span class="pre">--config</span></code> is used, only that configuration is processed. Otherwise,
merge the user and local configurations are merged. (Issue #368 / #369)</li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li>Don’t crash if Checker.build_tokens_line() returns None. (Issue #306)</li>
<li>Don’t crash if os.path.expanduser() throws an ImportError. (Issue #297)</li>
<li>Missing space around keyword parameter equal not always reported, E251.
(Issue #323)</li>
<li>Fix false positive E711/E712/E713. (Issues #330 and #336)</li>
<li>Do not skip physical checks if the newline is escaped. (Issue #319)</li>
<li>Flush sys.stdout to avoid race conditions with printing. See flake8 bug:
<a class="reference external" href="https://gitlab.com/pycqa/flake8/issues/17">https://gitlab.com/pycqa/flake8/issues/17</a> for more details. (Issue #363)</li>
</ul>
</div>
<div class="section" id="id7">
<h3>1.5.7 (2014-05-29)<a class="headerlink" href="#id7" title="Permalink to this headline">¶</a></h3>
<p>Bug fixes:</p>
<ul class="simple">
<li>Skip the traceback on “Broken pipe” signal. (Issue #275)</li>
<li>Do not exit when an option in <code class="docutils literal notranslate"><span class="pre">setup.cfg</span></code> or <code class="docutils literal notranslate"><span class="pre">tox.ini</span></code>
is not recognized.</li>
<li>Check the last line even if it does not end with a newline. (Issue #286)</li>
<li>Always open files in universal newlines mode in Python 2. (Issue #288)</li>
</ul>
</div>
<div class="section" id="id8">
<h3>1.5.6 (2014-04-14)<a class="headerlink" href="#id8" title="Permalink to this headline">¶</a></h3>
<p>Bug fixes:</p>
<ul class="simple">
<li>Check the last line even if it has no end-of-line. (Issue #273)</li>
</ul>
</div>
<div class="section" id="id9">
<h3>1.5.5 (2014-04-10)<a class="headerlink" href="#id9" title="Permalink to this headline">¶</a></h3>
<p>Bug fixes:</p>
<ul class="simple">
<li>Fix regression with E22 checks and inline comments. (Issue #271)</li>
</ul>
</div>
<div class="section" id="id10">
<h3>1.5.4 (2014-04-07)<a class="headerlink" href="#id10" title="Permalink to this headline">¶</a></h3>
<p>Bug fixes:</p>
<ul class="simple">
<li>Fix negative offset with E303 before a multi-line docstring.
(Issue #269)</li>
</ul>
</div>
<div class="section" id="id11">
<h3>1.5.3 (2014-04-04)<a class="headerlink" href="#id11" title="Permalink to this headline">¶</a></h3>
<p>Bug fixes:</p>
<ul class="simple">
<li>Fix wrong offset computation when error is on the last char
of a physical line. (Issue #268)</li>
</ul>
</div>
<div class="section" id="id12">
<h3>1.5.2 (2014-04-04)<a class="headerlink" href="#id12" title="Permalink to this headline">¶</a></h3>
<p>Changes:</p>
<ul class="simple">
<li>Distribute a universal wheel file.</li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li>Report correct line number for E303 with comments. (Issue #60)</li>
<li>Do not allow newline after parameter equal. (Issue #252)</li>
<li>Fix line number reported for multi-line strings. (Issue #220)</li>
<li>Fix false positive E121/E126 with multi-line strings. (Issue #265)</li>
<li>Fix E501 not detected in comments with Python 2.5.</li>
<li>Fix caret position with <code class="docutils literal notranslate"><span class="pre">--show-source</span></code> when line contains tabs.</li>
</ul>
</div>
<div class="section" id="id13">
<h3>1.5.1 (2014-03-27)<a class="headerlink" href="#id13" title="Permalink to this headline">¶</a></h3>
<p>Bug fixes:</p>
<ul class="simple">
<li>Fix a crash with E125 on multi-line strings. (Issue #263)</li>
</ul>
</div>
<div class="section" id="id14">
<h3>1.5 (2014-03-26)<a class="headerlink" href="#id14" title="Permalink to this headline">¶</a></h3>
<p>Changes:</p>
<ul class="simple">
<li>Report E129 instead of E125 for visually indented line with same
indent as next logical line. (Issue #126)</li>
<li>Report E265 for space before block comment. (Issue #190)</li>
<li>Report E713 and E714 when operators <code class="docutils literal notranslate"><span class="pre">not</span> <span class="pre">in</span></code> and <code class="docutils literal notranslate"><span class="pre">is</span> <span class="pre">not</span></code> are
recommended. (Issue #236)</li>
<li>Allow long lines in multiline strings and comments if they cannot
be wrapped. (Issue #224).</li>
<li>Optionally disable physical line checks inside multiline strings,
using <code class="docutils literal notranslate"><span class="pre">#</span> <span class="pre">noqa</span></code>. (Issue #242)</li>
<li>Change text for E121 to report “continuation line under-indented
for hanging indent” instead of indentation not being a
multiple of 4.</li>
<li>Report E131 instead of E121 / E126 if the hanging indent is not
consistent within the same continuation block. It helps when
error E121 or E126 is in the <code class="docutils literal notranslate"><span class="pre">ignore</span></code> list.</li>
<li>Report E126 instead of E121 when the continuation line is hanging
with extra indentation, even if indentation is not a multiple of 4.</li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li>Allow the checkers to report errors on empty files. (Issue #240)</li>
<li>Fix ignoring too many checks when <code class="docutils literal notranslate"><span class="pre">--select</span></code> is used with codes
declared in a flake8 extension. (Issue #216)</li>
<li>Fix regression with multiple brackets. (Issue #214)</li>
<li>Fix <code class="docutils literal notranslate"><span class="pre">StyleGuide</span></code> to parse the local configuration if the
keyword argument <code class="docutils literal notranslate"><span class="pre">paths</span></code> is specified. (Issue #246)</li>
<li>Fix a false positive E124 for hanging indent. (Issue #254)</li>
<li>Fix a false positive E126 with embedded colon. (Issue #144)</li>
<li>Fix a false positive E126 when indenting with tabs. (Issue #204)</li>
<li>Fix behaviour when <code class="docutils literal notranslate"><span class="pre">exclude</span></code> is in the configuration file and
the current directory is not the project directory. (Issue #247)</li>
<li>The logical checks can return <code class="docutils literal notranslate"><span class="pre">None</span></code> instead of an empty iterator.
(Issue #250)</li>
<li>Do not report multiple E101 if only the first indentation starts
with a tab. (Issue #237)</li>
<li>Fix a rare false positive W602. (Issue #34)</li>
</ul>
</div>
<div class="section" id="id15">
<h3>1.4.6 (2013-07-02)<a class="headerlink" href="#id15" title="Permalink to this headline">¶</a></h3>
<p>Changes:</p>
<ul class="simple">
<li>Honor <code class="docutils literal notranslate"><span class="pre">#</span> <span class="pre">noqa</span></code> for errors E711 and E712. (Issue #180)</li>
<li>When both a <code class="docutils literal notranslate"><span class="pre">tox.ini</span></code> and a <code class="docutils literal notranslate"><span class="pre">setup.cfg</span></code> are present in the project
directory, merge their contents. The <code class="docutils literal notranslate"><span class="pre">tox.ini</span></code> file takes
precedence (same as before). (Issue #182)</li>
<li>Give priority to <code class="docutils literal notranslate"><span class="pre">--select</span></code> over <code class="docutils literal notranslate"><span class="pre">--ignore</span></code>. (Issue #188)</li>
<li>Compare full path when excluding a file. (Issue #186)</li>
<li>New option <code class="docutils literal notranslate"><span class="pre">--hang-closing</span></code> to switch to the alternative style of
closing bracket indentation for hanging indent. Add error E133 for
closing bracket which is missing indentation. (Issue #103)</li>
<li>Accept both styles of closing bracket indentation for hanging indent.
Do not report error E123 in the default configuration. (Issue #103)</li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li>Do not crash when running AST checks and the document contains null bytes.
(Issue #184)</li>
<li>Correctly report other E12 errors when E123 is ignored. (Issue #103)</li>
<li>Fix false positive E261/E262 when the file contains a BOM. (Issue #193)</li>
<li>Fix E701, E702 and E703 not detected sometimes. (Issue #196)</li>
<li>Fix E122 not detected in some cases. (Issue #201 and #208)</li>
<li>Fix false positive E121 with multiple brackets. (Issue #203)</li>
</ul>
</div>
<div class="section" id="id16">
<h3>1.4.5 (2013-03-06)<a class="headerlink" href="#id16" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>When no path is specified, do not try to read from stdin. The feature
was added in 1.4.3, but it is not supported on Windows. Use <code class="docutils literal notranslate"><span class="pre">-</span></code>
filename argument to read from stdin. This usage is supported
since 1.3.4. (Issue #170)</li>
<li>Do not require <code class="docutils literal notranslate"><span class="pre">setuptools</span></code> in setup.py. It works around an issue
with <code class="docutils literal notranslate"><span class="pre">pip</span></code> and Python 3. (Issue #172)</li>
<li>Add <code class="docutils literal notranslate"><span class="pre">__pycache__</span></code> to the ignore list.</li>
<li>Change misleading message for E251. (Issue #171)</li>
<li>Do not report false E302 when the source file has a coding cookie or a
comment on the first line. (Issue #174)</li>
<li>Reorganize the tests and add tests for the API and for the command line
usage and options. (Issues #161 and #162)</li>
<li>Ignore all checks which are not explicitly selected when <code class="docutils literal notranslate"><span class="pre">select</span></code> is
passed to the <code class="docutils literal notranslate"><span class="pre">StyleGuide</span></code> constructor.</li>
</ul>
</div>
<div class="section" id="id17">
<h3>1.4.4 (2013-02-24)<a class="headerlink" href="#id17" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Report E227 or E228 instead of E225 for whitespace around bitwise, shift
or modulo operators. (Issue #166)</li>
<li>Change the message for E226 to make clear that it is about arithmetic
operators.</li>
<li>Fix a false positive E128 for continuation line indentation with tabs.</li>
<li>Fix regression with the <code class="docutils literal notranslate"><span class="pre">--diff</span></code> option. (Issue #169)</li>
<li>Fix the <code class="docutils literal notranslate"><span class="pre">TestReport</span></code> class to print the unexpected warnings and
errors.</li>
</ul>
</div>
<div class="section" id="id18">
<h3>1.4.3 (2013-02-22)<a class="headerlink" href="#id18" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Hide the <code class="docutils literal notranslate"><span class="pre">--doctest</span></code> and <code class="docutils literal notranslate"><span class="pre">--testsuite</span></code> options when installed.</li>
<li>Fix crash with AST checkers when the syntax is invalid. (Issue #160)</li>
<li>Read from standard input if no path is specified.</li>
<li>Initiate a graceful shutdown on <code class="docutils literal notranslate"><span class="pre">Control+C</span></code>.</li>
<li>Allow to change the <code class="docutils literal notranslate"><span class="pre">checker_class</span></code> for the <code class="docutils literal notranslate"><span class="pre">StyleGuide</span></code>.</li>
</ul>
</div>
<div class="section" id="id19">
<h3>1.4.2 (2013-02-10)<a class="headerlink" href="#id19" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Support AST checkers provided by third-party applications.</li>
<li>Register new checkers with <code class="docutils literal notranslate"><span class="pre">register_check(func_or_cls,</span> <span class="pre">codes)</span></code>.</li>
<li>Allow to construct a <code class="docutils literal notranslate"><span class="pre">StyleGuide</span></code> with a custom parser.</li>
<li>Accept visual indentation without parenthesis after the <code class="docutils literal notranslate"><span class="pre">if</span></code>
statement. (Issue #151)</li>
<li>Fix UnboundLocalError when using <code class="docutils literal notranslate"><span class="pre">#</span> <span class="pre">noqa</span></code> with continued lines.
(Issue #158)</li>
<li>Re-order the lines for the <code class="docutils literal notranslate"><span class="pre">StandardReport</span></code>.</li>
<li>Expand tabs when checking E12 continuation lines. (Issue #155)</li>
<li>Refactor the testing class <code class="docutils literal notranslate"><span class="pre">TestReport</span></code> and the specific test
functions into a separate test module.</li>
</ul>
</div>
<div class="section" id="id20">
<h3>1.4.1 (2013-01-18)<a class="headerlink" href="#id20" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Allow sphinx.ext.autodoc syntax for comments. (Issue #110)</li>
<li>Report E703 instead of E702 for the trailing semicolon. (Issue #117)</li>
<li>Honor <code class="docutils literal notranslate"><span class="pre">#</span> <span class="pre">noqa</span></code> in addition to <code class="docutils literal notranslate"><span class="pre">#</span> <span class="pre">nopep8</span></code>. (Issue #149)</li>
<li>Expose the <code class="docutils literal notranslate"><span class="pre">OptionParser</span></code> factory for better extensibility.</li>
</ul>
</div>
<div class="section" id="id21">
<h3>1.4 (2012-12-22)<a class="headerlink" href="#id21" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Report E226 instead of E225 for optional whitespace around common
operators (<code class="docutils literal notranslate"><span class="pre">*</span></code>, <code class="docutils literal notranslate"><span class="pre">**</span></code>, <code class="docutils literal notranslate"><span class="pre">/</span></code>, <code class="docutils literal notranslate"><span class="pre">+</span></code> and <code class="docutils literal notranslate"><span class="pre">-</span></code>). This new error
code is ignored in the default configuration because PEP 8 recommends
to “use your own judgement”. (Issue #96)</li>
<li>Lines with a <code class="docutils literal notranslate"><span class="pre">#</span> <span class="pre">nopep8</span></code> at the end will not issue errors on line
length E501 or continuation line indentation E12*. (Issue #27)</li>
<li>Fix AssertionError when the source file contains an invalid line
ending <code class="docutils literal notranslate"><span class="pre">"\r\r\n"</span></code>. (Issue #119)</li>
<li>Read the <code class="docutils literal notranslate"><span class="pre">[pep8]</span></code> section of <code class="docutils literal notranslate"><span class="pre">tox.ini</span></code> or <code class="docutils literal notranslate"><span class="pre">setup.cfg</span></code> if present.
(Issue #93 and #141)</li>
<li>Add the Sphinx-based documentation, and publish it
on <a class="reference external" href="http://pep8.readthedocs.org/">http://pep8.readthedocs.org/</a>. (Issue #105)</li>
</ul>
</div>
<div class="section" id="id22">
<h3>1.3.4 (2012-12-18)<a class="headerlink" href="#id22" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fix false positive E124 and E128 with comments. (Issue #100)</li>
<li>Fix error on stdin when running with bpython. (Issue #101)</li>
<li>Fix false positive E401. (Issue #104)</li>
<li>Report E231 for nested dictionary in list. (Issue #142)</li>
<li>Catch E271 at the beginning of the line. (Issue #133)</li>
<li>Fix false positive E126 for multi-line comments. (Issue #138)</li>
<li>Fix false positive E221 when operator is preceded by a comma. (Issue #135)</li>
<li>Fix <code class="docutils literal notranslate"><span class="pre">--diff</span></code> failing on one-line hunk. (Issue #137)</li>
<li>Fix the <code class="docutils literal notranslate"><span class="pre">--exclude</span></code> switch for directory paths. (Issue #111)</li>
<li>Use <code class="docutils literal notranslate"><span class="pre">-</span></code> filename to read from standard input. (Issue #128)</li>
</ul>
</div>
<div class="section" id="id23">
<h3>1.3.3 (2012-06-27)<a class="headerlink" href="#id23" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fix regression with continuation line checker. (Issue #98)</li>
</ul>
</div>
<div class="section" id="id24">
<h3>1.3.2 (2012-06-26)<a class="headerlink" href="#id24" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Revert to the previous behaviour for <code class="docutils literal notranslate"><span class="pre">--show-pep8</span></code>:
do not imply <code class="docutils literal notranslate"><span class="pre">--first</span></code>. (Issue #89)</li>
<li>Add E902 for IO errors. (Issue #87)</li>
<li>Fix false positive for E121, and missed E124. (Issue #92)</li>
<li>Set a sensible default path for config file on Windows. (Issue #95)</li>
<li>Allow <code class="docutils literal notranslate"><span class="pre">verbose</span></code> in the configuration file. (Issue #91)</li>
<li>Show the enforced <code class="docutils literal notranslate"><span class="pre">max-line-length</span></code> in the error message. (Issue #86)</li>
</ul>
</div>
<div class="section" id="id25">
<h3>1.3.1 (2012-06-18)<a class="headerlink" href="#id25" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Explain which configuration options are expected. Accept and recommend
the options names with hyphen instead of underscore. (Issue #82)</li>
<li>Do not read the user configuration when used as a module
(except if <code class="docutils literal notranslate"><span class="pre">config_file=True</span></code> is passed to the <code class="docutils literal notranslate"><span class="pre">StyleGuide</span></code> constructor).</li>
<li>Fix wrong or missing cases for the E12 series.</li>
<li>Fix cases where E122 was missed. (Issue #81)</li>
</ul>
</div>
<div class="section" id="id26">
<h3>1.3 (2012-06-15)<a class="headerlink" href="#id26" title="Permalink to this headline">¶</a></h3>
<div class="admonition warning">
<p class="first admonition-title">Warning</p>
<p class="last">The internal API is backwards incompatible.</p>
</div>
<ul class="simple">
<li>Remove global configuration and refactor the library around
a <code class="docutils literal notranslate"><span class="pre">StyleGuide</span></code> class; add the ability to configure various
reporters. (Issue #35 and #66)</li>
<li>Read user configuration from <code class="docutils literal notranslate"><span class="pre">~/.config/pep8</span></code>
and local configuration from <code class="docutils literal notranslate"><span class="pre">./.pep8</span></code>. (Issue #22)</li>
<li>Fix E502 for backslash embedded in multi-line string. (Issue #68)</li>
<li>Fix E225 for Python 3 iterable unpacking (PEP 3132). (Issue #72)</li>
<li>Enable the new checkers from the E12 series in the default
configuration.</li>
<li>Suggest less error-prone alternatives for E712 errors.</li>
<li>Rewrite checkers to run faster (E22, E251, E27).</li>
<li>Fixed a crash when parsed code is invalid (too many
closing brackets).</li>
<li>Fix E127 and E128 for continuation line indentation. (Issue #74)</li>
<li>New option <code class="docutils literal notranslate"><span class="pre">--format</span></code> to customize the error format. (Issue #23)</li>
<li>New option <code class="docutils literal notranslate"><span class="pre">--diff</span></code> to check only modified code. The unified
diff is read from STDIN. Example: <code class="docutils literal notranslate"><span class="pre">hg</span> <span class="pre">diff</span> <span class="pre">|</span> <span class="pre">pep8</span> <span class="pre">--diff</span></code>
(Issue #39)</li>
<li>Correctly report the count of failures and set the exit code to 1
when the <code class="docutils literal notranslate"><span class="pre">--doctest</span></code> or the <code class="docutils literal notranslate"><span class="pre">--testsuite</span></code> fails.</li>
<li>Correctly detect the encoding in Python 3. (Issue #69)</li>
<li>Drop support for Python 2.3, 2.4 and 3.0. (Issue #78)</li>
</ul>
</div>
<div class="section" id="id27">
<h3>1.2 (2012-06-01)<a class="headerlink" href="#id27" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Add E121 through E128 for continuation line indentation. These
checks are disabled by default. If you want to force all checks,
use switch <code class="docutils literal notranslate"><span class="pre">--select=E,W</span></code>. Patch by Sam Vilain. (Issue #64)</li>
<li>Add E721 for direct type comparisons. (Issue #47)</li>
<li>Add E711 and E712 for comparisons to singletons. (Issue #46)</li>
<li>Fix spurious E225 and E701 for function annotations. (Issue #29)</li>
<li>Add E502 for explicit line join between brackets.</li>
<li>Fix E901 when printing source with <code class="docutils literal notranslate"><span class="pre">--show-source</span></code>.</li>
<li>Report all errors for each checker, instead of reporting only the
first occurrence for each line.</li>
<li>Option <code class="docutils literal notranslate"><span class="pre">--show-pep8</span></code> implies <code class="docutils literal notranslate"><span class="pre">--first</span></code>.</li>
</ul>
</div>
<div class="section" id="id28">
<h3>1.1 (2012-05-24)<a class="headerlink" href="#id28" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Add E901 for syntax errors. (Issues #63 and #30)</li>
<li>Add E271, E272, E273 and E274 for extraneous whitespace around
keywords. (Issue #57)</li>
<li>Add <code class="docutils literal notranslate"><span class="pre">tox.ini</span></code> configuration file for tests. (Issue #61)</li>
<li>Add <code class="docutils literal notranslate"><span class="pre">.travis.yml</span></code> configuration file for continuous integration.
(Issue #62)</li>
</ul>
</div>
<div class="section" id="id29">
<h3>1.0.1 (2012-04-06)<a class="headerlink" href="#id29" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fix inconsistent version numbers.</li>
</ul>
</div>
<div class="section" id="id30">
<h3>1.0 (2012-04-04)<a class="headerlink" href="#id30" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fix W602 <code class="docutils literal notranslate"><span class="pre">raise</span></code> to handle multi-char names. (Issue #53)</li>
</ul>
</div>
<div class="section" id="id31">
<h3>0.7.0 (2012-03-26)<a class="headerlink" href="#id31" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Now <code class="docutils literal notranslate"><span class="pre">--first</span></code> prints only the first occurrence of each error.
The <code class="docutils literal notranslate"><span class="pre">--repeat</span></code> flag becomes obsolete because it is the default
behaviour. (Issue #6)</li>
<li>Allow to specify <code class="docutils literal notranslate"><span class="pre">--max-line-length</span></code>. (Issue #36)</li>
<li>Make the shebang more flexible. (Issue #26)</li>
<li>Add testsuite to the bundle. (Issue #25)</li>
<li>Fixes for Jython. (Issue #49)</li>
<li>Add PyPI classifiers. (Issue #43)</li>
<li>Fix the <code class="docutils literal notranslate"><span class="pre">--exclude</span></code> option. (Issue #48)</li>
<li>Fix W602, accept <code class="docutils literal notranslate"><span class="pre">raise</span></code> with 3 arguments. (Issue #34)</li>
<li>Correctly select all tests if <code class="docutils literal notranslate"><span class="pre">DEFAULT_IGNORE</span> <span class="pre">==</span> <span class="pre">''</span></code>.</li>
</ul>
</div>
<div class="section" id="id32">
<h3>0.6.1 (2010-10-03)<a class="headerlink" href="#id32" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fix inconsistent version numbers. (Issue #21)</li>
</ul>
</div>
<div class="section" id="id33">
<h3>0.6.0 (2010-09-19)<a class="headerlink" href="#id33" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Test suite reorganized and enhanced in order to check more failures
with fewer test files. Read the <code class="docutils literal notranslate"><span class="pre">run_tests</span></code> docstring for details
about the syntax.</li>
<li>Fix E225: accept <code class="docutils literal notranslate"><span class="pre">print</span> <span class="pre">>>sys.stderr,</span> <span class="pre">"..."</span></code> syntax.</li>
<li>Fix E501 for lines containing multibyte encoded characters. (Issue #7)</li>
<li>Fix E221, E222, E223, E224 not detected in some cases. (Issue #16)</li>
<li>Fix E211 to reject <code class="docutils literal notranslate"><span class="pre">v</span> <span class="pre">=</span> <span class="pre">dic['a']</span> <span class="pre">['b']</span></code>. (Issue #17)</li>
<li>Exit code is always 1 if any error or warning is found. (Issue #10)</li>
<li><code class="docutils literal notranslate"><span class="pre">--ignore</span></code> checks are now really ignored, especially in
conjunction with <code class="docutils literal notranslate"><span class="pre">--count</span></code>. (Issue #8)</li>
<li>Blank lines with spaces yield W293 instead of W291: some developers
want to ignore this warning and indent the blank lines to paste their
code easily in the Python interpreter.</li>
<li>Fix E301: do not require a blank line before an indented block. (Issue #14)</li>
<li>Fix E203 to accept NumPy slice notation <code class="docutils literal notranslate"><span class="pre">a[0,</span> <span class="pre">:]</span></code>. (Issue #13)</li>
<li>Performance improvements.</li>
<li>Fix decoding and checking non-UTF8 files in Python 3.</li>
<li>Fix E225: reject <code class="docutils literal notranslate"><span class="pre">True+False</span></code> when running on Python 3.</li>
<li>Fix an exception when the line starts with an operator.</li>
<li>Allow a new line before closing <code class="docutils literal notranslate"><span class="pre">)</span></code>, <code class="docutils literal notranslate"><span class="pre">}</span></code> or <code class="docutils literal notranslate"><span class="pre">]</span></code>. (Issue #5)</li>
</ul>
</div>
<div class="section" id="id34">
<h3>0.5.0 (2010-02-17)<a class="headerlink" href="#id34" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Changed the <code class="docutils literal notranslate"><span class="pre">--count</span></code> switch to print to sys.stderr and set
exit code to 1 if any error or warning is found.</li>
<li>E241 and E242 are removed from the standard checks. If you want to
include these checks, use switch <code class="docutils literal notranslate"><span class="pre">--select=E,W</span></code>. (Issue #4)</li>
<li>Blank line is not mandatory before the first class method or nested
function definition, even if there’s a docstring. (Issue #1)</li>
<li>Add the switch <code class="docutils literal notranslate"><span class="pre">--version</span></code>.</li>
<li>Fix decoding errors with Python 3. (Issue #13 <a class="footnote-reference" href="#id43" id="id35">[1]</a>)</li>
<li>Add <code class="docutils literal notranslate"><span class="pre">--select</span></code> option which is mirror of <code class="docutils literal notranslate"><span class="pre">--ignore</span></code>.</li>
<li>Add checks E261 and E262 for spaces before inline comments.</li>
<li>New check W604 warns about deprecated usage of backticks.</li>
<li>New check W603 warns about the deprecated operator <code class="docutils literal notranslate"><span class="pre"><></span></code>.</li>
<li>Performance improvement, due to rewriting of E225.</li>
<li>E225 now accepts:<ul>
<li>no whitespace after unary operator or similar. (Issue #9 <a class="footnote-reference" href="#id43" id="id36">[1]</a>)</li>
<li>lambda function with argument unpacking or keyword defaults.</li>
</ul>
</li>
<li>Reserve “2 blank lines” for module-level logical blocks. (E303)</li>
<li>Allow multi-line comments. (E302, issue #10 <a class="footnote-reference" href="#id43" id="id37">[1]</a>)</li>
</ul>
</div>
<div class="section" id="id38">
<h3>0.4.2 (2009-10-22)<a class="headerlink" href="#id38" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Decorators on classes and class methods are OK now.</li>
</ul>
</div>
<div class="section" id="id39">
<h3>0.4 (2009-10-20)<a class="headerlink" href="#id39" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Support for all versions of Python from 2.3 to 3.1.</li>
<li>New and greatly expanded self tests.</li>
<li>Added <code class="docutils literal notranslate"><span class="pre">--count</span></code> option to print the total number of errors and warnings.</li>
<li>Further improvements to the handling of comments and blank lines.
(Issue #1 <a class="footnote-reference" href="#id43" id="id40">[1]</a> and others changes.)</li>
<li>Check all py files in directory when passed a directory (Issue
#2 <a class="footnote-reference" href="#id43" id="id41">[1]</a>). This also prevents an exception when traversing directories
with non <code class="docutils literal notranslate"><span class="pre">*.py</span></code> files.</li>
<li>E231 should allow commas to be followed by <code class="docutils literal notranslate"><span class="pre">)</span></code>. (Issue #3 <a class="footnote-reference" href="#id43" id="id42">[1]</a>)</li>
<li>Spaces are no longer required around the equals sign for keyword
arguments or default parameter values.</li>
</ul>
<table class="docutils footnote" frame="void" id="id43" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label">[1]</td><td><em>(<a class="fn-backref" href="#id35">1</a>, <a class="fn-backref" href="#id36">2</a>, <a class="fn-backref" href="#id37">3</a>, <a class="fn-backref" href="#id40">4</a>, <a class="fn-backref" href="#id41">5</a>, <a class="fn-backref" href="#id42">6</a>)</em> These issues refer to the <a class="reference external" href="http://github.com/cburroughs/pep8.py/issues">previous issue tracker</a>.</td></tr>
</tbody>
</table>
</div>
<div class="section" id="id45">
<h3>0.3.1 (2009-09-14)<a class="headerlink" href="#id45" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixes for comments: do not count them when checking for blank lines between
items.</li>
<li>Added setup.py for pypi upload and easy_installability.</li>
</ul>
</div>
<div class="section" id="id46">
<h3>0.2 (2007-10-16)<a class="headerlink" href="#id46" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Loads of fixes and improvements.</li>
</ul>
</div>
<div class="section" id="id47">
<h3>0.1 (2006-10-01)<a class="headerlink" href="#id47" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>First release.</li>
</ul>
</div>
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