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<div class="section" id="module-urllib.parse">
<span id="urllib-parse-parse-urls-into-components"></span><h1><a class="reference internal" href="#module-urllib.parse" title="urllib.parse: Parse URLs into or assemble them from components."><code class="xref py py-mod docutils literal notranslate"><span class="pre">urllib.parse</span></code></a> — Parse URLs into components<a class="headerlink" href="#module-urllib.parse" title="Permalink to this headline">¶</a></h1>
<p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.7/Lib/urllib/parse.py">Lib/urllib/parse.py</a></p>
<hr class="docutils" id="index-0" />
<p>This module defines a standard interface to break Uniform Resource Locator (URL)
strings up in components (addressing scheme, network location, path etc.), to
combine the components back into a URL string, and to convert a “relative URL”
to an absolute URL given a “base URL.”</p>
<p>The module has been designed to match the Internet RFC on Relative Uniform
Resource Locators. It supports the following URL schemes: <code class="docutils literal notranslate"><span class="pre">file</span></code>, <code class="docutils literal notranslate"><span class="pre">ftp</span></code>,
<code class="docutils literal notranslate"><span class="pre">gopher</span></code>, <code class="docutils literal notranslate"><span class="pre">hdl</span></code>, <code class="docutils literal notranslate"><span class="pre">http</span></code>, <code class="docutils literal notranslate"><span class="pre">https</span></code>, <code class="docutils literal notranslate"><span class="pre">imap</span></code>, <code class="docutils literal notranslate"><span class="pre">mailto</span></code>, <code class="docutils literal notranslate"><span class="pre">mms</span></code>,
<code class="docutils literal notranslate"><span class="pre">news</span></code>, <code class="docutils literal notranslate"><span class="pre">nntp</span></code>, <code class="docutils literal notranslate"><span class="pre">prospero</span></code>, <code class="docutils literal notranslate"><span class="pre">rsync</span></code>, <code class="docutils literal notranslate"><span class="pre">rtsp</span></code>, <code class="docutils literal notranslate"><span class="pre">rtspu</span></code>, <code class="docutils literal notranslate"><span class="pre">sftp</span></code>,
<code class="docutils literal notranslate"><span class="pre">shttp</span></code>, <code class="docutils literal notranslate"><span class="pre">sip</span></code>, <code class="docutils literal notranslate"><span class="pre">sips</span></code>, <code class="docutils literal notranslate"><span class="pre">snews</span></code>, <code class="docutils literal notranslate"><span class="pre">svn</span></code>, <code class="docutils literal notranslate"><span class="pre">svn+ssh</span></code>, <code class="docutils literal notranslate"><span class="pre">telnet</span></code>,
<code class="docutils literal notranslate"><span class="pre">wais</span></code>, <code class="docutils literal notranslate"><span class="pre">ws</span></code>, <code class="docutils literal notranslate"><span class="pre">wss</span></code>.</p>
<p>The <a class="reference internal" href="#module-urllib.parse" title="urllib.parse: Parse URLs into or assemble them from components."><code class="xref py py-mod docutils literal notranslate"><span class="pre">urllib.parse</span></code></a> module defines functions that fall into two broad
categories: URL parsing and URL quoting. These are covered in detail in
the following sections.</p>
<div class="section" id="url-parsing">
<h2>URL Parsing<a class="headerlink" href="#url-parsing" title="Permalink to this headline">¶</a></h2>
<p>The URL parsing functions focus on splitting a URL string into its components,
or on combining URL components into a URL string.</p>
<dl class="function">
<dt id="urllib.parse.urlparse">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">urlparse</code><span class="sig-paren">(</span><em class="sig-param">urlstring</em>, <em class="sig-param">scheme=''</em>, <em class="sig-param">allow_fragments=True</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urlparse" title="Permalink to this definition">¶</a></dt>
<dd><p>Parse a URL into six components, returning a 6-item <a class="reference internal" href="../glossary.html#term-named-tuple"><span class="xref std std-term">named tuple</span></a>. This
corresponds to the general structure of a URL:
<code class="docutils literal notranslate"><span class="pre">scheme://netloc/path;parameters?query#fragment</span></code>.
Each tuple item is a string, possibly empty. The components are not broken up in
smaller parts (for example, the network location is a single string), and %
escapes are not expanded. The delimiters as shown above are not part of the
result, except for a leading slash in the <em>path</em> component, which is retained if
present. For example:</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlparse</span>
<span class="gp">>>> </span><span class="n">o</span> <span class="o">=</span> <span class="n">urlparse</span><span class="p">(</span><span class="s1">'http://www.cwi.nl:80/</span><span class="si">%7E</span><span class="s1">guido/Python.html'</span><span class="p">)</span>
<span class="gp">>>> </span><span class="n">o</span>
<span class="go">ParseResult(scheme='http', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',</span>
<span class="go"> params='', query='', fragment='')</span>
<span class="gp">>>> </span><span class="n">o</span><span class="o">.</span><span class="n">scheme</span>
<span class="go">'http'</span>
<span class="gp">>>> </span><span class="n">o</span><span class="o">.</span><span class="n">port</span>
<span class="go">80</span>
<span class="gp">>>> </span><span class="n">o</span><span class="o">.</span><span class="n">geturl</span><span class="p">()</span>
<span class="go">'http://www.cwi.nl:80/%7Eguido/Python.html'</span>
</pre></div>
</div>
<p>Following the syntax specifications in <span class="target" id="index-1"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc1808.html"><strong>RFC 1808</strong></a>, urlparse recognizes
a netloc only if it is properly introduced by ‘//’. Otherwise the
input is presumed to be a relative URL and thus to start with
a path component.</p>
<div class="highlight-pycon3 notranslate"><div class="highlight"><pre><span></span><span class="go"> >>> from urllib.parse import urlparse</span>
<span class="go"> >>> urlparse('//www.cwi.nl:80/%7Eguido/Python.html')</span>
<span class="go"> ParseResult(scheme='', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',</span>
<span class="go"> params='', query='', fragment='')</span>
<span class="go"> >>> urlparse('www.cwi.nl/%7Eguido/Python.html')</span>
<span class="go"> ParseResult(scheme='', netloc='', path='www.cwi.nl/%7Eguido/Python.html',</span>
<span class="go"> params='', query='', fragment='')</span>
<span class="go"> >>> urlparse('help/Python.html')</span>
<span class="go"> ParseResult(scheme='', netloc='', path='help/Python.html', params='',</span>
<span class="go"> query='', fragment='')</span>
</pre></div>
</div>
<p>The <em>scheme</em> argument gives the default addressing scheme, to be
used only if the URL does not specify one. It should be the same type
(text or bytes) as <em>urlstring</em>, except that the default value <code class="docutils literal notranslate"><span class="pre">''</span></code> is
always allowed, and is automatically converted to <code class="docutils literal notranslate"><span class="pre">b''</span></code> if appropriate.</p>
<p>If the <em>allow_fragments</em> argument is false, fragment identifiers are not
recognized. Instead, they are parsed as part of the path, parameters
or query component, and <code class="xref py py-attr docutils literal notranslate"><span class="pre">fragment</span></code> is set to the empty string in
the return value.</p>
<p>The return value is a <a class="reference internal" href="../glossary.html#term-named-tuple"><span class="xref std std-term">named tuple</span></a>, which means that its items can
be accessed by index or as named attributes, which are:</p>
<table class="docutils align-default">
<colgroup>
<col style="width: 25%" />
<col style="width: 10%" />
<col style="width: 36%" />
<col style="width: 30%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Attribute</p></th>
<th class="head"><p>Index</p></th>
<th class="head"><p>Value</p></th>
<th class="head"><p>Value if not present</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">scheme</span></code></p></td>
<td><p>0</p></td>
<td><p>URL scheme specifier</p></td>
<td><p><em>scheme</em> parameter</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">netloc</span></code></p></td>
<td><p>1</p></td>
<td><p>Network location part</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">path</span></code></p></td>
<td><p>2</p></td>
<td><p>Hierarchical path</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">params</span></code></p></td>
<td><p>3</p></td>
<td><p>Parameters for last path
element</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">query</span></code></p></td>
<td><p>4</p></td>
<td><p>Query component</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">fragment</span></code></p></td>
<td><p>5</p></td>
<td><p>Fragment identifier</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">username</span></code></p></td>
<td></td>
<td><p>User name</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">password</span></code></p></td>
<td></td>
<td><p>Password</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">hostname</span></code></p></td>
<td></td>
<td><p>Host name (lower case)</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">port</span></code></p></td>
<td></td>
<td><p>Port number as integer,
if present</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
</tbody>
</table>
<p>Reading the <code class="xref py py-attr docutils literal notranslate"><span class="pre">port</span></code> attribute will raise a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a> if
an invalid port is specified in the URL. See section
<a class="reference internal" href="#urlparse-result-object"><span class="std std-ref">Structured Parse Results</span></a> for more information on the result object.</p>
<p>Unmatched square brackets in the <code class="xref py py-attr docutils literal notranslate"><span class="pre">netloc</span></code> attribute will raise a
<a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>.</p>
<p>Characters in the <code class="xref py py-attr docutils literal notranslate"><span class="pre">netloc</span></code> attribute that decompose under NFKC
normalization (as used by the IDNA encoding) into any of <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>, or <code class="docutils literal notranslate"><span class="pre">:</span></code> will raise a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>. If the URL is
decomposed before parsing, no error will be raised.</p>
<p>As is the case with all named tuples, the subclass has a few additional methods
and attributes that are particularly useful. One such method is <code class="xref py py-meth docutils literal notranslate"><span class="pre">_replace()</span></code>.
The <code class="xref py py-meth docutils literal notranslate"><span class="pre">_replace()</span></code> method will return a new ParseResult object replacing specified
fields with new values.</p>
<div class="highlight-pycon3 notranslate"><div class="highlight"><pre><span></span><span class="go"> >>> from urllib.parse import urlparse</span>
<span class="go"> >>> u = urlparse('//www.cwi.nl:80/%7Eguido/Python.html')</span>
<span class="go"> >>> u</span>
<span class="go"> ParseResult(scheme='', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',</span>
<span class="go"> params='', query='', fragment='')</span>
<span class="go"> >>> u._replace(scheme='http')</span>
<span class="go"> ParseResult(scheme='http', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',</span>
<span class="go"> params='', query='', fragment='')</span>
</pre></div>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.2: </span>Added IPv6 URL parsing capabilities.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.3: </span>The fragment is now parsed for all URL schemes (unless <em>allow_fragment</em> is
false), in accordance with <span class="target" id="index-2"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc3986.html"><strong>RFC 3986</strong></a>. Previously, a whitelist of
schemes that support fragments existed.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.6: </span>Out-of-range port numbers now raise <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>, instead of
returning <a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a>.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.7.3: </span>Characters that affect netloc parsing under NFKC normalization will
now raise <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>.</p>
</div>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.parse_qs">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">parse_qs</code><span class="sig-paren">(</span><em class="sig-param">qs</em>, <em class="sig-param">keep_blank_values=False</em>, <em class="sig-param">strict_parsing=False</em>, <em class="sig-param">encoding='utf-8'</em>, <em class="sig-param">errors='replace'</em>, <em class="sig-param">max_num_fields=None</em>, <em class="sig-param">separator='&'</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.parse_qs" title="Permalink to this definition">¶</a></dt>
<dd><p>Parse a query string given as a string argument (data of type
<em class="mimetype">application/x-www-form-urlencoded</em>). Data are returned as a
dictionary. The dictionary keys are the unique query variable names and the
values are lists of values for each name.</p>
<p>The optional argument <em>keep_blank_values</em> is a flag indicating whether blank
values in percent-encoded queries should be treated as blank strings. A true value
indicates that blanks should be retained as blank strings. The default false
value indicates that blank values are to be ignored and treated as if they were
not included.</p>
<p>The optional argument <em>strict_parsing</em> is a flag indicating what to do with
parsing errors. If false (the default), errors are silently ignored. If true,
errors raise a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a> exception.</p>
<p>The optional <em>encoding</em> and <em>errors</em> parameters specify how to decode
percent-encoded sequences into Unicode characters, as accepted by the
<a class="reference internal" href="stdtypes.html#bytes.decode" title="bytes.decode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">bytes.decode()</span></code></a> method.</p>
<p>The optional argument <em>max_num_fields</em> is the maximum number of fields to
read. If set, then throws a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a> if there are more than
<em>max_num_fields</em> fields read.</p>
<p>The optional argument <em>separator</em> is the symbol to use for separating the
query arguments. It defaults to <code class="docutils literal notranslate"><span class="pre">&</span></code>.</p>
<p>Use the <a class="reference internal" href="#urllib.parse.urlencode" title="urllib.parse.urlencode"><code class="xref py py-func docutils literal notranslate"><span class="pre">urllib.parse.urlencode()</span></code></a> function (with the <code class="docutils literal notranslate"><span class="pre">doseq</span></code>
parameter set to <code class="docutils literal notranslate"><span class="pre">True</span></code>) to convert such dictionaries into query
strings.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.2: </span>Add <em>encoding</em> and <em>errors</em> parameters.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.7.2: </span>Added <em>max_num_fields</em> parameter.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.7.10: </span>Added <em>separator</em> parameter with the default value of <code class="docutils literal notranslate"><span class="pre">&</span></code>. Python
versions earlier than Python 3.7.10 allowed using both <code class="docutils literal notranslate"><span class="pre">;</span></code> and <code class="docutils literal notranslate"><span class="pre">&</span></code> as
query parameter separator. This has been changed to allow only a single
separator key, with <code class="docutils literal notranslate"><span class="pre">&</span></code> as the default separator.</p>
</div>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.parse_qsl">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">parse_qsl</code><span class="sig-paren">(</span><em class="sig-param">qs</em>, <em class="sig-param">keep_blank_values=False</em>, <em class="sig-param">strict_parsing=False</em>, <em class="sig-param">encoding='utf-8'</em>, <em class="sig-param">errors='replace'</em>, <em class="sig-param">max_num_fields=None</em>, <em class="sig-param">separator='&'</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.parse_qsl" title="Permalink to this definition">¶</a></dt>
<dd><p>Parse a query string given as a string argument (data of type
<em class="mimetype">application/x-www-form-urlencoded</em>). Data are returned as a list of
name, value pairs.</p>
<p>The optional argument <em>keep_blank_values</em> is a flag indicating whether blank
values in percent-encoded queries should be treated as blank strings. A true value
indicates that blanks should be retained as blank strings. The default false
value indicates that blank values are to be ignored and treated as if they were
not included.</p>
<p>The optional argument <em>strict_parsing</em> is a flag indicating what to do with
parsing errors. If false (the default), errors are silently ignored. If true,
errors raise a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a> exception.</p>
<p>The optional <em>encoding</em> and <em>errors</em> parameters specify how to decode
percent-encoded sequences into Unicode characters, as accepted by the
<a class="reference internal" href="stdtypes.html#bytes.decode" title="bytes.decode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">bytes.decode()</span></code></a> method.</p>
<p>The optional argument <em>max_num_fields</em> is the maximum number of fields to
read. If set, then throws a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a> if there are more than
<em>max_num_fields</em> fields read.</p>
<p>The optional argument <em>separator</em> is the symbol to use for separating the
query arguments. It defaults to <code class="docutils literal notranslate"><span class="pre">&</span></code>.</p>
<p>Use the <a class="reference internal" href="#urllib.parse.urlencode" title="urllib.parse.urlencode"><code class="xref py py-func docutils literal notranslate"><span class="pre">urllib.parse.urlencode()</span></code></a> function to convert such lists of pairs into
query strings.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.2: </span>Add <em>encoding</em> and <em>errors</em> parameters.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.7.2: </span>Added <em>max_num_fields</em> parameter.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.7.10: </span>Added <em>separator</em> parameter with the default value of <code class="docutils literal notranslate"><span class="pre">&</span></code>. Python
versions earlier than Python 3.7.10 allowed using both <code class="docutils literal notranslate"><span class="pre">;</span></code> and <code class="docutils literal notranslate"><span class="pre">&</span></code> as
query parameter separator. This has been changed to allow only a single
separator key, with <code class="docutils literal notranslate"><span class="pre">&</span></code> as the default separator.</p>
</div>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.urlunparse">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">urlunparse</code><span class="sig-paren">(</span><em class="sig-param">parts</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urlunparse" title="Permalink to this definition">¶</a></dt>
<dd><p>Construct a URL from a tuple as returned by <code class="docutils literal notranslate"><span class="pre">urlparse()</span></code>. The <em>parts</em>
argument can be any six-item iterable. This may result in a slightly
different, but equivalent URL, if the URL that was parsed originally had
unnecessary delimiters (for example, a <code class="docutils literal notranslate"><span class="pre">?</span></code> with an empty query; the RFC
states that these are equivalent).</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.urlsplit">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">urlsplit</code><span class="sig-paren">(</span><em class="sig-param">urlstring</em>, <em class="sig-param">scheme=''</em>, <em class="sig-param">allow_fragments=True</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urlsplit" title="Permalink to this definition">¶</a></dt>
<dd><p>This is similar to <a class="reference internal" href="#urllib.parse.urlparse" title="urllib.parse.urlparse"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlparse()</span></code></a>, but does not split the params from the URL.
This should generally be used instead of <a class="reference internal" href="#urllib.parse.urlparse" title="urllib.parse.urlparse"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlparse()</span></code></a> if the more recent URL
syntax allowing parameters to be applied to each segment of the <em>path</em> portion
of the URL (see <span class="target" id="index-3"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2396.html"><strong>RFC 2396</strong></a>) is wanted. A separate function is needed to
separate the path segments and parameters. This function returns a 5-item
<a class="reference internal" href="../glossary.html#term-named-tuple"><span class="xref std std-term">named tuple</span></a>:</p>
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="p">(</span><span class="n">addressing</span> <span class="n">scheme</span><span class="p">,</span> <span class="n">network</span> <span class="n">location</span><span class="p">,</span> <span class="n">path</span><span class="p">,</span> <span class="n">query</span><span class="p">,</span> <span class="n">fragment</span> <span class="n">identifier</span><span class="p">)</span><span class="o">.</span>
</pre></div>
</div>
<p>The return value is a <a class="reference internal" href="../glossary.html#term-named-tuple"><span class="xref std std-term">named tuple</span></a>, its items can be accessed by index
or as named attributes:</p>
<table class="docutils align-default">
<colgroup>
<col style="width: 25%" />
<col style="width: 10%" />
<col style="width: 35%" />
<col style="width: 31%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Attribute</p></th>
<th class="head"><p>Index</p></th>
<th class="head"><p>Value</p></th>
<th class="head"><p>Value if not present</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">scheme</span></code></p></td>
<td><p>0</p></td>
<td><p>URL scheme specifier</p></td>
<td><p><em>scheme</em> parameter</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">netloc</span></code></p></td>
<td><p>1</p></td>
<td><p>Network location part</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">path</span></code></p></td>
<td><p>2</p></td>
<td><p>Hierarchical path</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">query</span></code></p></td>
<td><p>3</p></td>
<td><p>Query component</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">fragment</span></code></p></td>
<td><p>4</p></td>
<td><p>Fragment identifier</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">username</span></code></p></td>
<td></td>
<td><p>User name</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">password</span></code></p></td>
<td></td>
<td><p>Password</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">hostname</span></code></p></td>
<td></td>
<td><p>Host name (lower case)</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">port</span></code></p></td>
<td></td>
<td><p>Port number as integer,
if present</p></td>
<td><p><a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a></p></td>
</tr>
</tbody>
</table>
<p>Reading the <code class="xref py py-attr docutils literal notranslate"><span class="pre">port</span></code> attribute will raise a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a> if
an invalid port is specified in the URL. See section
<a class="reference internal" href="#urlparse-result-object"><span class="std std-ref">Structured Parse Results</span></a> for more information on the result object.</p>
<p>Unmatched square brackets in the <code class="xref py py-attr docutils literal notranslate"><span class="pre">netloc</span></code> attribute will raise a
<a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>.</p>
<p>Characters in the <code class="xref py py-attr docutils literal notranslate"><span class="pre">netloc</span></code> attribute that decompose under NFKC
normalization (as used by the IDNA encoding) into any of <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>, or <code class="docutils literal notranslate"><span class="pre">:</span></code> will raise a <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>. If the URL is
decomposed before parsing, no error will be raised.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.6: </span>Out-of-range port numbers now raise <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>, instead of
returning <a class="reference internal" href="constants.html#None" title="None"><code class="xref py py-const docutils literal notranslate"><span class="pre">None</span></code></a>.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.7.3: </span>Characters that affect netloc parsing under NFKC normalization will
now raise <a class="reference internal" href="exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>.</p>
</div>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.urlunsplit">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">urlunsplit</code><span class="sig-paren">(</span><em class="sig-param">parts</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urlunsplit" title="Permalink to this definition">¶</a></dt>
<dd><p>Combine the elements of a tuple as returned by <a class="reference internal" href="#urllib.parse.urlsplit" title="urllib.parse.urlsplit"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlsplit()</span></code></a> into a
complete URL as a string. The <em>parts</em> argument can be any five-item
iterable. This may result in a slightly different, but equivalent URL, if the
URL that was parsed originally had unnecessary delimiters (for example, a ?
with an empty query; the RFC states that these are equivalent).</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.urljoin">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">urljoin</code><span class="sig-paren">(</span><em class="sig-param">base</em>, <em class="sig-param">url</em>, <em class="sig-param">allow_fragments=True</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urljoin" title="Permalink to this definition">¶</a></dt>
<dd><p>Construct a full (“absolute”) URL by combining a “base URL” (<em>base</em>) with
another URL (<em>url</em>). Informally, this uses components of the base URL, in
particular the addressing scheme, the network location and (part of) the
path, to provide missing components in the relative URL. For example:</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urljoin</span>
<span class="gp">>>> </span><span class="n">urljoin</span><span class="p">(</span><span class="s1">'http://www.cwi.nl/</span><span class="si">%7E</span><span class="s1">guido/Python.html'</span><span class="p">,</span> <span class="s1">'FAQ.html'</span><span class="p">)</span>
<span class="go">'http://www.cwi.nl/%7Eguido/FAQ.html'</span>
</pre></div>
</div>
<p>The <em>allow_fragments</em> argument has the same meaning and default as for
<a class="reference internal" href="#urllib.parse.urlparse" title="urllib.parse.urlparse"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlparse()</span></code></a>.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>If <em>url</em> is an absolute URL (that is, starting with <code class="docutils literal notranslate"><span class="pre">//</span></code> or <code class="docutils literal notranslate"><span class="pre">scheme://</span></code>),
the <em>url</em>’s host name and/or scheme will be present in the result. For example:</p>
</div>
<div class="highlight-pycon3 notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">urljoin</span><span class="p">(</span><span class="s1">'http://www.cwi.nl/</span><span class="si">%7E</span><span class="s1">guido/Python.html'</span><span class="p">,</span>
<span class="gp">... </span> <span class="s1">'//www.python.org/</span><span class="si">%7E</span><span class="s1">guido'</span><span class="p">)</span>
<span class="go">'http://www.python.org/%7Eguido'</span>
</pre></div>
</div>
<p>If you do not want that behavior, preprocess the <em>url</em> with <a class="reference internal" href="#urllib.parse.urlsplit" title="urllib.parse.urlsplit"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlsplit()</span></code></a> and
<a class="reference internal" href="#urllib.parse.urlunsplit" title="urllib.parse.urlunsplit"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlunsplit()</span></code></a>, removing possible <em>scheme</em> and <em>netloc</em> parts.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.5: </span>Behaviour updated to match the semantics defined in <span class="target" id="index-4"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc3986.html"><strong>RFC 3986</strong></a>.</p>
</div>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.urldefrag">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">urldefrag</code><span class="sig-paren">(</span><em class="sig-param">url</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urldefrag" title="Permalink to this definition">¶</a></dt>
<dd><p>If <em>url</em> contains a fragment identifier, return a modified version of <em>url</em>
with no fragment identifier, and the fragment identifier as a separate
string. If there is no fragment identifier in <em>url</em>, return <em>url</em> unmodified
and an empty string.</p>
<p>The return value is a <a class="reference internal" href="../glossary.html#term-named-tuple"><span class="xref std std-term">named tuple</span></a>, its items can be accessed by index
or as named attributes:</p>
<table class="docutils align-default">
<colgroup>
<col style="width: 25%" />
<col style="width: 10%" />
<col style="width: 35%" />
<col style="width: 31%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Attribute</p></th>
<th class="head"><p>Index</p></th>
<th class="head"><p>Value</p></th>
<th class="head"><p>Value if not present</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">url</span></code></p></td>
<td><p>0</p></td>
<td><p>URL with no fragment</p></td>
<td><p>empty string</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-attr docutils literal notranslate"><span class="pre">fragment</span></code></p></td>
<td><p>1</p></td>
<td><p>Fragment identifier</p></td>
<td><p>empty string</p></td>
</tr>
</tbody>
</table>
<p>See section <a class="reference internal" href="#urlparse-result-object"><span class="std std-ref">Structured Parse Results</span></a> for more information on the result
object.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.2: </span>Result is a structured object rather than a simple 2-tuple.</p>
</div>
</dd></dl>
</div>
<div class="section" id="parsing-ascii-encoded-bytes">
<span id="id1"></span><h2>Parsing ASCII Encoded Bytes<a class="headerlink" href="#parsing-ascii-encoded-bytes" title="Permalink to this headline">¶</a></h2>
<p>The URL parsing functions were originally designed to operate on character
strings only. In practice, it is useful to be able to manipulate properly
quoted and encoded URLs as sequences of ASCII bytes. Accordingly, the
URL parsing functions in this module all operate on <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> and
<a class="reference internal" href="stdtypes.html#bytearray" title="bytearray"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytearray</span></code></a> objects in addition to <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> objects.</p>
<p>If <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> data is passed in, the result will also contain only
<a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> data. If <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> or <a class="reference internal" href="stdtypes.html#bytearray" title="bytearray"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytearray</span></code></a> data is
passed in, the result will contain only <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> data.</p>
<p>Attempting to mix <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> data with <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> or
<a class="reference internal" href="stdtypes.html#bytearray" title="bytearray"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytearray</span></code></a> in a single function call will result in a
<a class="reference internal" href="exceptions.html#TypeError" title="TypeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">TypeError</span></code></a> being raised, while attempting to pass in non-ASCII
byte values will trigger <a class="reference internal" href="exceptions.html#UnicodeDecodeError" title="UnicodeDecodeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">UnicodeDecodeError</span></code></a>.</p>
<p>To support easier conversion of result objects between <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> and
<a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>, all return values from URL parsing functions provide
either an <code class="xref py py-meth docutils literal notranslate"><span class="pre">encode()</span></code> method (when the result contains <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>
data) or a <code class="xref py py-meth docutils literal notranslate"><span class="pre">decode()</span></code> method (when the result contains <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>
data). The signatures of these methods match those of the corresponding
<a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> and <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> methods (except that the default encoding
is <code class="docutils literal notranslate"><span class="pre">'ascii'</span></code> rather than <code class="docutils literal notranslate"><span class="pre">'utf-8'</span></code>). Each produces a value of a
corresponding type that contains either <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> data (for
<code class="xref py py-meth docutils literal notranslate"><span class="pre">encode()</span></code> methods) or <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> data (for
<code class="xref py py-meth docutils literal notranslate"><span class="pre">decode()</span></code> methods).</p>
<p>Applications that need to operate on potentially improperly quoted URLs
that may contain non-ASCII data will need to do their own decoding from
bytes to characters before invoking the URL parsing methods.</p>
<p>The behaviour described in this section applies only to the URL parsing
functions. The URL quoting functions use their own rules when producing
or consuming byte sequences as detailed in the documentation of the
individual URL quoting functions.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.2: </span>URL parsing functions now accept ASCII encoded byte sequences</p>
</div>
</div>
<div class="section" id="structured-parse-results">
<span id="urlparse-result-object"></span><h2>Structured Parse Results<a class="headerlink" href="#structured-parse-results" title="Permalink to this headline">¶</a></h2>
<p>The result objects from the <a class="reference internal" href="#urllib.parse.urlparse" title="urllib.parse.urlparse"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlparse()</span></code></a>, <a class="reference internal" href="#urllib.parse.urlsplit" title="urllib.parse.urlsplit"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlsplit()</span></code></a> and
<a class="reference internal" href="#urllib.parse.urldefrag" title="urllib.parse.urldefrag"><code class="xref py py-func docutils literal notranslate"><span class="pre">urldefrag()</span></code></a> functions are subclasses of the <a class="reference internal" href="stdtypes.html#tuple" title="tuple"><code class="xref py py-class docutils literal notranslate"><span class="pre">tuple</span></code></a> type.
These subclasses add the attributes listed in the documentation for
those functions, the encoding and decoding support described in the
previous section, as well as an additional method:</p>
<dl class="method">
<dt id="urllib.parse.urllib.parse.SplitResult.geturl">
<code class="sig-prename descclassname">urllib.parse.SplitResult.</code><code class="sig-name descname">geturl</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urllib.parse.SplitResult.geturl" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the re-combined version of the original URL as a string. This may
differ from the original URL in that the scheme may be normalized to lower
case and empty components may be dropped. Specifically, empty parameters,
queries, and fragment identifiers will be removed.</p>
<p>For <a class="reference internal" href="#urllib.parse.urldefrag" title="urllib.parse.urldefrag"><code class="xref py py-func docutils literal notranslate"><span class="pre">urldefrag()</span></code></a> results, only empty fragment identifiers will be removed.
For <a class="reference internal" href="#urllib.parse.urlsplit" title="urllib.parse.urlsplit"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlsplit()</span></code></a> and <a class="reference internal" href="#urllib.parse.urlparse" title="urllib.parse.urlparse"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlparse()</span></code></a> results, all noted changes will be
made to the URL returned by this method.</p>
<p>The result of this method remains unchanged if passed back through the original
parsing function:</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlsplit</span>
<span class="gp">>>> </span><span class="n">url</span> <span class="o">=</span> <span class="s1">'HTTP://www.Python.org/doc/#'</span>
<span class="gp">>>> </span><span class="n">r1</span> <span class="o">=</span> <span class="n">urlsplit</span><span class="p">(</span><span class="n">url</span><span class="p">)</span>
<span class="gp">>>> </span><span class="n">r1</span><span class="o">.</span><span class="n">geturl</span><span class="p">()</span>
<span class="go">'http://www.Python.org/doc/'</span>
<span class="gp">>>> </span><span class="n">r2</span> <span class="o">=</span> <span class="n">urlsplit</span><span class="p">(</span><span class="n">r1</span><span class="o">.</span><span class="n">geturl</span><span class="p">())</span>
<span class="gp">>>> </span><span class="n">r2</span><span class="o">.</span><span class="n">geturl</span><span class="p">()</span>
<span class="go">'http://www.Python.org/doc/'</span>
</pre></div>
</div>
</dd></dl>
<p>The following classes provide the implementations of the structured parse
results when operating on <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> objects:</p>
<dl class="class">
<dt id="urllib.parse.DefragResult">
<em class="property">class </em><code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">DefragResult</code><span class="sig-paren">(</span><em class="sig-param">url</em>, <em class="sig-param">fragment</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.DefragResult" title="Permalink to this definition">¶</a></dt>
<dd><p>Concrete class for <a class="reference internal" href="#urllib.parse.urldefrag" title="urllib.parse.urldefrag"><code class="xref py py-func docutils literal notranslate"><span class="pre">urldefrag()</span></code></a> results containing <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>
data. The <code class="xref py py-meth docutils literal notranslate"><span class="pre">encode()</span></code> method returns a <a class="reference internal" href="#urllib.parse.DefragResultBytes" title="urllib.parse.DefragResultBytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">DefragResultBytes</span></code></a>
instance.</p>
<div class="versionadded">
<p><span class="versionmodified added">New in version 3.2.</span></p>
</div>
</dd></dl>
<dl class="class">
<dt id="urllib.parse.ParseResult">
<em class="property">class </em><code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">ParseResult</code><span class="sig-paren">(</span><em class="sig-param">scheme</em>, <em class="sig-param">netloc</em>, <em class="sig-param">path</em>, <em class="sig-param">params</em>, <em class="sig-param">query</em>, <em class="sig-param">fragment</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.ParseResult" title="Permalink to this definition">¶</a></dt>
<dd><p>Concrete class for <a class="reference internal" href="#urllib.parse.urlparse" title="urllib.parse.urlparse"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlparse()</span></code></a> results containing <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>
data. The <code class="xref py py-meth docutils literal notranslate"><span class="pre">encode()</span></code> method returns a <a class="reference internal" href="#urllib.parse.ParseResultBytes" title="urllib.parse.ParseResultBytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">ParseResultBytes</span></code></a>
instance.</p>
</dd></dl>
<dl class="class">
<dt id="urllib.parse.SplitResult">
<em class="property">class </em><code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">SplitResult</code><span class="sig-paren">(</span><em class="sig-param">scheme</em>, <em class="sig-param">netloc</em>, <em class="sig-param">path</em>, <em class="sig-param">query</em>, <em class="sig-param">fragment</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.SplitResult" title="Permalink to this definition">¶</a></dt>
<dd><p>Concrete class for <a class="reference internal" href="#urllib.parse.urlsplit" title="urllib.parse.urlsplit"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlsplit()</span></code></a> results containing <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>
data. The <code class="xref py py-meth docutils literal notranslate"><span class="pre">encode()</span></code> method returns a <a class="reference internal" href="#urllib.parse.SplitResultBytes" title="urllib.parse.SplitResultBytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">SplitResultBytes</span></code></a>
instance.</p>
</dd></dl>
<p>The following classes provide the implementations of the parse results when
operating on <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> or <a class="reference internal" href="stdtypes.html#bytearray" title="bytearray"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytearray</span></code></a> objects:</p>
<dl class="class">
<dt id="urllib.parse.DefragResultBytes">
<em class="property">class </em><code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">DefragResultBytes</code><span class="sig-paren">(</span><em class="sig-param">url</em>, <em class="sig-param">fragment</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.DefragResultBytes" title="Permalink to this definition">¶</a></dt>
<dd><p>Concrete class for <a class="reference internal" href="#urllib.parse.urldefrag" title="urllib.parse.urldefrag"><code class="xref py py-func docutils literal notranslate"><span class="pre">urldefrag()</span></code></a> results containing <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>
data. The <code class="xref py py-meth docutils literal notranslate"><span class="pre">decode()</span></code> method returns a <a class="reference internal" href="#urllib.parse.DefragResult" title="urllib.parse.DefragResult"><code class="xref py py-class docutils literal notranslate"><span class="pre">DefragResult</span></code></a>
instance.</p>
<div class="versionadded">
<p><span class="versionmodified added">New in version 3.2.</span></p>
</div>
</dd></dl>
<dl class="class">
<dt id="urllib.parse.ParseResultBytes">
<em class="property">class </em><code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">ParseResultBytes</code><span class="sig-paren">(</span><em class="sig-param">scheme</em>, <em class="sig-param">netloc</em>, <em class="sig-param">path</em>, <em class="sig-param">params</em>, <em class="sig-param">query</em>, <em class="sig-param">fragment</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.ParseResultBytes" title="Permalink to this definition">¶</a></dt>
<dd><p>Concrete class for <a class="reference internal" href="#urllib.parse.urlparse" title="urllib.parse.urlparse"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlparse()</span></code></a> results containing <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>
data. The <code class="xref py py-meth docutils literal notranslate"><span class="pre">decode()</span></code> method returns a <a class="reference internal" href="#urllib.parse.ParseResult" title="urllib.parse.ParseResult"><code class="xref py py-class docutils literal notranslate"><span class="pre">ParseResult</span></code></a>
instance.</p>
<div class="versionadded">
<p><span class="versionmodified added">New in version 3.2.</span></p>
</div>
</dd></dl>
<dl class="class">
<dt id="urllib.parse.SplitResultBytes">
<em class="property">class </em><code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">SplitResultBytes</code><span class="sig-paren">(</span><em class="sig-param">scheme</em>, <em class="sig-param">netloc</em>, <em class="sig-param">path</em>, <em class="sig-param">query</em>, <em class="sig-param">fragment</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.SplitResultBytes" title="Permalink to this definition">¶</a></dt>
<dd><p>Concrete class for <a class="reference internal" href="#urllib.parse.urlsplit" title="urllib.parse.urlsplit"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlsplit()</span></code></a> results containing <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>
data. The <code class="xref py py-meth docutils literal notranslate"><span class="pre">decode()</span></code> method returns a <a class="reference internal" href="#urllib.parse.SplitResult" title="urllib.parse.SplitResult"><code class="xref py py-class docutils literal notranslate"><span class="pre">SplitResult</span></code></a>
instance.</p>
<div class="versionadded">
<p><span class="versionmodified added">New in version 3.2.</span></p>
</div>
</dd></dl>
</div>
<div class="section" id="url-quoting">
<h2>URL Quoting<a class="headerlink" href="#url-quoting" title="Permalink to this headline">¶</a></h2>
<p>The URL quoting functions focus on taking program data and making it safe
for use as URL components by quoting special characters and appropriately
encoding non-ASCII text. They also support reversing these operations to
recreate the original data from the contents of a URL component if that
task isn’t already covered by the URL parsing functions above.</p>
<dl class="function">
<dt id="urllib.parse.quote">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">quote</code><span class="sig-paren">(</span><em class="sig-param">string</em>, <em class="sig-param">safe='/'</em>, <em class="sig-param">encoding=None</em>, <em class="sig-param">errors=None</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.quote" title="Permalink to this definition">¶</a></dt>
<dd><p>Replace special characters in <em>string</em> using the <code class="docutils literal notranslate"><span class="pre">%xx</span></code> escape. Letters,
digits, and the characters <code class="docutils literal notranslate"><span class="pre">'_.-~'</span></code> are never quoted. By default, this
function is intended for quoting the path section of URL. The optional <em>safe</em>
parameter specifies additional ASCII characters that should not be quoted
— its default value is <code class="docutils literal notranslate"><span class="pre">'/'</span></code>.</p>
<p><em>string</em> may be either a <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> or a <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.7: </span>Moved from <span class="target" id="index-5"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2396.html"><strong>RFC 2396</strong></a> to <span class="target" id="index-6"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc3986.html"><strong>RFC 3986</strong></a> for quoting URL strings. “~” is now
included in the set of unreserved characters.</p>
</div>
<p>The optional <em>encoding</em> and <em>errors</em> parameters specify how to deal with
non-ASCII characters, as accepted by the <a class="reference internal" href="stdtypes.html#str.encode" title="str.encode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">str.encode()</span></code></a> method.
<em>encoding</em> defaults to <code class="docutils literal notranslate"><span class="pre">'utf-8'</span></code>.
<em>errors</em> defaults to <code class="docutils literal notranslate"><span class="pre">'strict'</span></code>, meaning unsupported characters raise a
<a class="reference internal" href="exceptions.html#UnicodeEncodeError" title="UnicodeEncodeError"><code class="xref py py-class docutils literal notranslate"><span class="pre">UnicodeEncodeError</span></code></a>.
<em>encoding</em> and <em>errors</em> must not be supplied if <em>string</em> is a
<a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>, or a <a class="reference internal" href="exceptions.html#TypeError" title="TypeError"><code class="xref py py-class docutils literal notranslate"><span class="pre">TypeError</span></code></a> is raised.</p>
<p>Note that <code class="docutils literal notranslate"><span class="pre">quote(string,</span> <span class="pre">safe,</span> <span class="pre">encoding,</span> <span class="pre">errors)</span></code> is equivalent to
<code class="docutils literal notranslate"><span class="pre">quote_from_bytes(string.encode(encoding,</span> <span class="pre">errors),</span> <span class="pre">safe)</span></code>.</p>
<p>Example: <code class="docutils literal notranslate"><span class="pre">quote('/El</span> <span class="pre">Niño/')</span></code> yields <code class="docutils literal notranslate"><span class="pre">'/El%20Ni%C3%B1o/'</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.quote_plus">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">quote_plus</code><span class="sig-paren">(</span><em class="sig-param">string</em>, <em class="sig-param">safe=''</em>, <em class="sig-param">encoding=None</em>, <em class="sig-param">errors=None</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.quote_plus" title="Permalink to this definition">¶</a></dt>
<dd><p>Like <a class="reference internal" href="#urllib.parse.quote" title="urllib.parse.quote"><code class="xref py py-func docutils literal notranslate"><span class="pre">quote()</span></code></a>, but also replace spaces by plus signs, as required for
quoting HTML form values when building up a query string to go into a URL.
Plus signs in the original string are escaped unless they are included in
<em>safe</em>. It also does not have <em>safe</em> default to <code class="docutils literal notranslate"><span class="pre">'/'</span></code>.</p>
<p>Example: <code class="docutils literal notranslate"><span class="pre">quote_plus('/El</span> <span class="pre">Niño/')</span></code> yields <code class="docutils literal notranslate"><span class="pre">'%2FEl+Ni%C3%B1o%2F'</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.quote_from_bytes">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">quote_from_bytes</code><span class="sig-paren">(</span><em class="sig-param">bytes</em>, <em class="sig-param">safe='/'</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.quote_from_bytes" title="Permalink to this definition">¶</a></dt>
<dd><p>Like <a class="reference internal" href="#urllib.parse.quote" title="urllib.parse.quote"><code class="xref py py-func docutils literal notranslate"><span class="pre">quote()</span></code></a>, but accepts a <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> object rather than a
<a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>, and does not perform string-to-bytes encoding.</p>
<p>Example: <code class="docutils literal notranslate"><span class="pre">quote_from_bytes(b'a&\xef')</span></code> yields
<code class="docutils literal notranslate"><span class="pre">'a%26%EF'</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.unquote">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">unquote</code><span class="sig-paren">(</span><em class="sig-param">string</em>, <em class="sig-param">encoding='utf-8'</em>, <em class="sig-param">errors='replace'</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.unquote" title="Permalink to this definition">¶</a></dt>
<dd><p>Replace <code class="docutils literal notranslate"><span class="pre">%xx</span></code> escapes by their single-character equivalent.
The optional <em>encoding</em> and <em>errors</em> parameters specify how to decode
percent-encoded sequences into Unicode characters, as accepted by the
<a class="reference internal" href="stdtypes.html#bytes.decode" title="bytes.decode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">bytes.decode()</span></code></a> method.</p>
<p><em>string</em> must be a <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>.</p>
<p><em>encoding</em> defaults to <code class="docutils literal notranslate"><span class="pre">'utf-8'</span></code>.
<em>errors</em> defaults to <code class="docutils literal notranslate"><span class="pre">'replace'</span></code>, meaning invalid sequences are replaced
by a placeholder character.</p>
<p>Example: <code class="docutils literal notranslate"><span class="pre">unquote('/El%20Ni%C3%B1o/')</span></code> yields <code class="docutils literal notranslate"><span class="pre">'/El</span> <span class="pre">Niño/'</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.unquote_plus">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">unquote_plus</code><span class="sig-paren">(</span><em class="sig-param">string</em>, <em class="sig-param">encoding='utf-8'</em>, <em class="sig-param">errors='replace'</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.unquote_plus" title="Permalink to this definition">¶</a></dt>
<dd><p>Like <a class="reference internal" href="#urllib.parse.unquote" title="urllib.parse.unquote"><code class="xref py py-func docutils literal notranslate"><span class="pre">unquote()</span></code></a>, but also replace plus signs by spaces, as required for
unquoting HTML form values.</p>
<p><em>string</em> must be a <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>.</p>
<p>Example: <code class="docutils literal notranslate"><span class="pre">unquote_plus('/El+Ni%C3%B1o/')</span></code> yields <code class="docutils literal notranslate"><span class="pre">'/El</span> <span class="pre">Niño/'</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.unquote_to_bytes">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">unquote_to_bytes</code><span class="sig-paren">(</span><em class="sig-param">string</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.unquote_to_bytes" title="Permalink to this definition">¶</a></dt>
<dd><p>Replace <code class="docutils literal notranslate"><span class="pre">%xx</span></code> escapes by their single-octet equivalent, and return a
<a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> object.</p>
<p><em>string</em> may be either a <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> or a <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>.</p>
<p>If it is a <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>, unescaped non-ASCII characters in <em>string</em>
are encoded into UTF-8 bytes.</p>
<p>Example: <code class="docutils literal notranslate"><span class="pre">unquote_to_bytes('a%26%EF')</span></code> yields <code class="docutils literal notranslate"><span class="pre">b'a&\xef'</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="urllib.parse.urlencode">
<code class="sig-prename descclassname">urllib.parse.</code><code class="sig-name descname">urlencode</code><span class="sig-paren">(</span><em class="sig-param">query</em>, <em class="sig-param">doseq=False</em>, <em class="sig-param">safe=''</em>, <em class="sig-param">encoding=None</em>, <em class="sig-param">errors=None</em>, <em class="sig-param">quote_via=quote_plus</em><span class="sig-paren">)</span><a class="headerlink" href="#urllib.parse.urlencode" title="Permalink to this definition">¶</a></dt>
<dd><p>Convert a mapping object or a sequence of two-element tuples, which may
contain <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> or <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> objects, to a percent-encoded ASCII
text string. If the resultant string is to be used as a <em>data</em> for POST
operation with the <a class="reference internal" href="urllib.request.html#urllib.request.urlopen" title="urllib.request.urlopen"><code class="xref py py-func docutils literal notranslate"><span class="pre">urlopen()</span></code></a> function, then
it should be encoded to bytes, otherwise it would result in a
<a class="reference internal" href="exceptions.html#TypeError" title="TypeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">TypeError</span></code></a>.</p>
<p>The resulting string is a series of <code class="docutils literal notranslate"><span class="pre">key=value</span></code> pairs separated by <code class="docutils literal notranslate"><span class="pre">'&'</span></code>
characters, where both <em>key</em> and <em>value</em> are quoted using the <em>quote_via</em>
function. By default, <a class="reference internal" href="#urllib.parse.quote_plus" title="urllib.parse.quote_plus"><code class="xref py py-func docutils literal notranslate"><span class="pre">quote_plus()</span></code></a> is used to quote the values, which
means spaces are quoted as a <code class="docutils literal notranslate"><span class="pre">'+'</span></code> character and ‘/’ characters are
encoded as <code class="docutils literal notranslate"><span class="pre">%2F</span></code>, which follows the standard for GET requests
(<code class="docutils literal notranslate"><span class="pre">application/x-www-form-urlencoded</span></code>). An alternate function that can be
passed as <em>quote_via</em> is <a class="reference internal" href="#urllib.parse.quote" title="urllib.parse.quote"><code class="xref py py-func docutils literal notranslate"><span class="pre">quote()</span></code></a>, which will encode spaces as <code class="docutils literal notranslate"><span class="pre">%20</span></code>
and not encode ‘/’ characters. For maximum control of what is quoted, use
<code class="docutils literal notranslate"><span class="pre">quote</span></code> and specify a value for <em>safe</em>.</p>
<p>When a sequence of two-element tuples is used as the <em>query</em>
argument, the first element of each tuple is a key and the second is a
value. The value element in itself can be a sequence and in that case, if
the optional parameter <em>doseq</em> is evaluates to <code class="docutils literal notranslate"><span class="pre">True</span></code>, individual
<code class="docutils literal notranslate"><span class="pre">key=value</span></code> pairs separated by <code class="docutils literal notranslate"><span class="pre">'&'</span></code> are generated for each element of
the value sequence for the key. The order of parameters in the encoded
string will match the order of parameter tuples in the sequence.</p>
<p>The <em>safe</em>, <em>encoding</em>, and <em>errors</em> parameters are passed down to
<em>quote_via</em> (the <em>encoding</em> and <em>errors</em> parameters are only passed
when a query element is a <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a>).</p>
<p>To reverse this encoding process, <a class="reference internal" href="#urllib.parse.parse_qs" title="urllib.parse.parse_qs"><code class="xref py py-func docutils literal notranslate"><span class="pre">parse_qs()</span></code></a> and <a class="reference internal" href="#urllib.parse.parse_qsl" title="urllib.parse.parse_qsl"><code class="xref py py-func docutils literal notranslate"><span class="pre">parse_qsl()</span></code></a> are
provided in this module to parse query strings into Python data structures.</p>
<p>Refer to <a class="reference internal" href="urllib.request.html#urllib-examples"><span class="std std-ref">urllib examples</span></a> to find out how urlencode
method can be used for generating query string for a URL or data for POST.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">Changed in version 3.2: </span>Query parameter supports bytes and string objects.</p>
</div>
<div class="versionadded">
<p><span class="versionmodified added">New in version 3.5: </span><em>quote_via</em> parameter.</p>
</div>
</dd></dl>
<div class="admonition seealso">
<p class="admonition-title">See also</p>
<dl class="simple">
<dt><span class="target" id="index-7"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc3986.html"><strong>RFC 3986</strong></a> - Uniform Resource Identifiers</dt><dd><p>This is the current standard (STD66). Any changes to urllib.parse module
should conform to this. Certain deviations could be observed, which are
mostly for backward compatibility purposes and for certain de-facto
parsing requirements as commonly observed in major browsers.</p>
</dd>
<dt><span class="target" id="index-8"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2732.html"><strong>RFC 2732</strong></a> - Format for Literal IPv6 Addresses in URL’s.</dt><dd><p>This specifies the parsing requirements of IPv6 URLs.</p>
</dd>
<dt><span class="target" id="index-9"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2396.html"><strong>RFC 2396</strong></a> - Uniform Resource Identifiers (URI): Generic Syntax</dt><dd><p>Document describing the generic syntactic requirements for both Uniform Resource
Names (URNs) and Uniform Resource Locators (URLs).</p>
</dd>
<dt><span class="target" id="index-10"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2368.html"><strong>RFC 2368</strong></a> - The mailto URL scheme.</dt><dd><p>Parsing requirements for mailto URL schemes.</p>
</dd>
<dt><span class="target" id="index-11"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc1808.html"><strong>RFC 1808</strong></a> - Relative Uniform Resource Locators</dt><dd><p>This Request For Comments includes the rules for joining an absolute and a
relative URL, including a fair number of “Abnormal Examples” which govern the
treatment of border cases.</p>
</dd>
<dt><span class="target" id="index-12"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc1738.html"><strong>RFC 1738</strong></a> - Uniform Resource Locators (URL)</dt><dd><p>This specifies the formal syntax and semantics of absolute URLs.</p>
</dd>
</dl>
</div>
</div>
</div>
</div>
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<ul>
<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">urllib.parse</span></code> — Parse URLs into components</a><ul>
<li><a class="reference internal" href="#url-parsing">URL Parsing</a></li>
<li><a class="reference internal" href="#parsing-ascii-encoded-bytes">Parsing ASCII Encoded Bytes</a></li>
<li><a class="reference internal" href="#structured-parse-results">Structured Parse Results</a></li>
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