251 lines
15 KiB
HTML
251 lines
15 KiB
HTML
|
|
|||
|
|
<!DOCTYPE html>
|
|||
|
|
|
|||
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|||
|
|
<head>
|
|||
|
|
<meta charset="utf-8" />
|
|||
|
|
<title>email.encoders: Encoders — Python 3.7.4 documentation</title>
|
|||
|
|
<link rel="stylesheet" href="../_static/pydoctheme.css" type="text/css" />
|
|||
|
|
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
|
|||
|
|
|
|||
|
|
<script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
|
|||
|
|
<script type="text/javascript" src="../_static/jquery.js"></script>
|
|||
|
|
<script type="text/javascript" src="../_static/underscore.js"></script>
|
|||
|
|
<script type="text/javascript" src="../_static/doctools.js"></script>
|
|||
|
|
<script type="text/javascript" src="../_static/language_data.js"></script>
|
|||
|
|
|
|||
|
|
<script type="text/javascript" src="../_static/sidebar.js"></script>
|
|||
|
|
|
|||
|
|
<link rel="search" type="application/opensearchdescription+xml"
|
|||
|
|
title="Search within Python 3.7.4 documentation"
|
|||
|
|
href="../_static/opensearch.xml"/>
|
|||
|
|
<link rel="author" title="About these documents" href="../about.html" />
|
|||
|
|
<link rel="index" title="Index" href="../genindex.html" />
|
|||
|
|
<link rel="search" title="Search" href="../search.html" />
|
|||
|
|
<link rel="copyright" title="Copyright" href="../copyright.html" />
|
|||
|
|
<link rel="next" title="email.utils: Miscellaneous utilities" href="email.utils.html" />
|
|||
|
|
<link rel="prev" title="email.charset: Representing character sets" href="email.charset.html" />
|
|||
|
|
<link rel="shortcut icon" type="image/png" href="../_static/py.png" />
|
|||
|
|
<link rel="canonical" href="https://docs.python.org/3/library/email.encoders.html" />
|
|||
|
|
|
|||
|
|
<script type="text/javascript" src="../_static/copybutton.js"></script>
|
|||
|
|
<script type="text/javascript" src="../_static/switchers.js"></script>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
<style>
|
|||
|
|
@media only screen {
|
|||
|
|
table.full-width-table {
|
|||
|
|
width: 100%;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
</style>
|
|||
|
|
|
|||
|
|
|
|||
|
|
</head><body>
|
|||
|
|
|
|||
|
|
<div class="related" role="navigation" aria-label="related navigation">
|
|||
|
|
<h3>Navigation</h3>
|
|||
|
|
<ul>
|
|||
|
|
<li class="right" style="margin-right: 10px">
|
|||
|
|
<a href="../genindex.html" title="General Index"
|
|||
|
|
accesskey="I">index</a></li>
|
|||
|
|
<li class="right" >
|
|||
|
|
<a href="../py-modindex.html" title="Python Module Index"
|
|||
|
|
>modules</a> |</li>
|
|||
|
|
<li class="right" >
|
|||
|
|
<a href="email.utils.html" title="email.utils: Miscellaneous utilities"
|
|||
|
|
accesskey="N">next</a> |</li>
|
|||
|
|
<li class="right" >
|
|||
|
|
<a href="email.charset.html" title="email.charset: Representing character sets"
|
|||
|
|
accesskey="P">previous</a> |</li>
|
|||
|
|
<li><img src="../_static/py.png" alt=""
|
|||
|
|
style="vertical-align: middle; margin-top: -1px"/></li>
|
|||
|
|
<li><a href="https://www.python.org/">Python</a> »</li>
|
|||
|
|
<li>
|
|||
|
|
<span class="language_switcher_placeholder">en</span>
|
|||
|
|
<span class="version_switcher_placeholder">3.7.4</span>
|
|||
|
|
<a href="../index.html">Documentation </a> »
|
|||
|
|
</li>
|
|||
|
|
|
|||
|
|
<li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li>
|
|||
|
|
<li class="nav-item nav-item-2"><a href="netdata.html" >Internet Data Handling</a> »</li>
|
|||
|
|
<li class="nav-item nav-item-3"><a href="email.html" accesskey="U"><code class="xref py py-mod docutils literal notranslate"><span class="pre">email</span></code> — An email and MIME handling package</a> »</li>
|
|||
|
|
<li class="right">
|
|||
|
|
|
|||
|
|
|
|||
|
|
<div class="inline-search" style="display: none" role="search">
|
|||
|
|
<form class="inline-search" action="../search.html" method="get">
|
|||
|
|
<input placeholder="Quick search" type="text" name="q" />
|
|||
|
|
<input type="submit" value="Go" />
|
|||
|
|
<input type="hidden" name="check_keywords" value="yes" />
|
|||
|
|
<input type="hidden" name="area" value="default" />
|
|||
|
|
</form>
|
|||
|
|
</div>
|
|||
|
|
<script type="text/javascript">$('.inline-search').show(0);</script>
|
|||
|
|
|
|
|||
|
|
</li>
|
|||
|
|
|
|||
|
|
</ul>
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
<div class="document">
|
|||
|
|
<div class="documentwrapper">
|
|||
|
|
<div class="bodywrapper">
|
|||
|
|
<div class="body" role="main">
|
|||
|
|
|
|||
|
|
<div class="section" id="module-email.encoders">
|
|||
|
|
<span id="email-encoders-encoders"></span><h1><a class="reference internal" href="#module-email.encoders" title="email.encoders: Encoders for email message payloads."><code class="xref py py-mod docutils literal notranslate"><span class="pre">email.encoders</span></code></a>: Encoders<a class="headerlink" href="#module-email.encoders" 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/email/encoders.py">Lib/email/encoders.py</a></p>
|
|||
|
|
<hr class="docutils" />
|
|||
|
|
<p>This module is part of the legacy (<code class="docutils literal notranslate"><span class="pre">Compat32</span></code>) email API. In the
|
|||
|
|
new API the functionality is provided by the <em>cte</em> parameter of
|
|||
|
|
the <a class="reference internal" href="email.message.html#email.message.EmailMessage.set_content" title="email.message.EmailMessage.set_content"><code class="xref py py-meth docutils literal notranslate"><span class="pre">set_content()</span></code></a> method.</p>
|
|||
|
|
<p>This module is deprecated in Python 3. The functions provided here
|
|||
|
|
should not be called explicitly since the <a class="reference internal" href="email.mime.html#email.mime.text.MIMEText" title="email.mime.text.MIMEText"><code class="xref py py-class docutils literal notranslate"><span class="pre">MIMEText</span></code></a>
|
|||
|
|
class sets the content type and CTE header using the <em>_subtype</em> and <em>_charset</em>
|
|||
|
|
values passed during the instaniation of that class.</p>
|
|||
|
|
<p>The remaining text in this section is the original documentation of the module.</p>
|
|||
|
|
<p>When creating <a class="reference internal" href="email.compat32-message.html#email.message.Message" title="email.message.Message"><code class="xref py py-class docutils literal notranslate"><span class="pre">Message</span></code></a> objects from scratch, you often
|
|||
|
|
need to encode the payloads for transport through compliant mail servers. This
|
|||
|
|
is especially true for <em class="mimetype">image/*</em> and <em class="mimetype">text/*</em> type messages
|
|||
|
|
containing binary data.</p>
|
|||
|
|
<p>The <a class="reference internal" href="email.html#module-email" title="email: Package supporting the parsing, manipulating, and generating email messages."><code class="xref py py-mod docutils literal notranslate"><span class="pre">email</span></code></a> package provides some convenient encodings in its
|
|||
|
|
<code class="xref py py-mod docutils literal notranslate"><span class="pre">encoders</span></code> module. These encoders are actually used by the
|
|||
|
|
<a class="reference internal" href="email.mime.html#email.mime.audio.MIMEAudio" title="email.mime.audio.MIMEAudio"><code class="xref py py-class docutils literal notranslate"><span class="pre">MIMEAudio</span></code></a> and <a class="reference internal" href="email.mime.html#email.mime.image.MIMEImage" title="email.mime.image.MIMEImage"><code class="xref py py-class docutils literal notranslate"><span class="pre">MIMEImage</span></code></a>
|
|||
|
|
class constructors to provide default encodings. All encoder functions take
|
|||
|
|
exactly one argument, the message object to encode. They usually extract the
|
|||
|
|
payload, encode it, and reset the payload to this newly encoded value. They
|
|||
|
|
should also set the <em class="mailheader">Content-Transfer-Encoding</em> header as appropriate.</p>
|
|||
|
|
<p>Note that these functions are not meaningful for a multipart message. They
|
|||
|
|
must be applied to individual subparts instead, and will raise 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> if passed a message whose type is multipart.</p>
|
|||
|
|
<p>Here are the encoding functions provided:</p>
|
|||
|
|
<dl class="function">
|
|||
|
|
<dt id="email.encoders.encode_quopri">
|
|||
|
|
<code class="descclassname">email.encoders.</code><code class="descname">encode_quopri</code><span class="sig-paren">(</span><em>msg</em><span class="sig-paren">)</span><a class="headerlink" href="#email.encoders.encode_quopri" title="Permalink to this definition">¶</a></dt>
|
|||
|
|
<dd><p>Encodes the payload into quoted-printable form and sets the
|
|||
|
|
<em class="mailheader">Content-Transfer-Encoding</em> header to <code class="docutils literal notranslate"><span class="pre">quoted-printable</span></code> <a class="footnote-reference brackets" href="#id2" id="id1">1</a>.
|
|||
|
|
This is a good encoding to use when most of your payload is normal printable
|
|||
|
|
data, but contains a few unprintable characters.</p>
|
|||
|
|
</dd></dl>
|
|||
|
|
|
|||
|
|
<dl class="function">
|
|||
|
|
<dt id="email.encoders.encode_base64">
|
|||
|
|
<code class="descclassname">email.encoders.</code><code class="descname">encode_base64</code><span class="sig-paren">(</span><em>msg</em><span class="sig-paren">)</span><a class="headerlink" href="#email.encoders.encode_base64" title="Permalink to this definition">¶</a></dt>
|
|||
|
|
<dd><p>Encodes the payload into base64 form and sets the
|
|||
|
|
<em class="mailheader">Content-Transfer-Encoding</em> header to <code class="docutils literal notranslate"><span class="pre">base64</span></code>. This is a good
|
|||
|
|
encoding to use when most of your payload is unprintable data since it is a more
|
|||
|
|
compact form than quoted-printable. The drawback of base64 encoding is that it
|
|||
|
|
renders the text non-human readable.</p>
|
|||
|
|
</dd></dl>
|
|||
|
|
|
|||
|
|
<dl class="function">
|
|||
|
|
<dt id="email.encoders.encode_7or8bit">
|
|||
|
|
<code class="descclassname">email.encoders.</code><code class="descname">encode_7or8bit</code><span class="sig-paren">(</span><em>msg</em><span class="sig-paren">)</span><a class="headerlink" href="#email.encoders.encode_7or8bit" title="Permalink to this definition">¶</a></dt>
|
|||
|
|
<dd><p>This doesn’t actually modify the message’s payload, but it does set the
|
|||
|
|
<em class="mailheader">Content-Transfer-Encoding</em> header to either <code class="docutils literal notranslate"><span class="pre">7bit</span></code> or <code class="docutils literal notranslate"><span class="pre">8bit</span></code> as
|
|||
|
|
appropriate, based on the payload data.</p>
|
|||
|
|
</dd></dl>
|
|||
|
|
|
|||
|
|
<dl class="function">
|
|||
|
|
<dt id="email.encoders.encode_noop">
|
|||
|
|
<code class="descclassname">email.encoders.</code><code class="descname">encode_noop</code><span class="sig-paren">(</span><em>msg</em><span class="sig-paren">)</span><a class="headerlink" href="#email.encoders.encode_noop" title="Permalink to this definition">¶</a></dt>
|
|||
|
|
<dd><p>This does nothing; it doesn’t even set the
|
|||
|
|
<em class="mailheader">Content-Transfer-Encoding</em> header.</p>
|
|||
|
|
</dd></dl>
|
|||
|
|
|
|||
|
|
<p class="rubric">Footnotes</p>
|
|||
|
|
<dl class="footnote brackets">
|
|||
|
|
<dt class="label" id="id2"><span class="brackets"><a class="fn-backref" href="#id1">1</a></span></dt>
|
|||
|
|
<dd><p>Note that encoding with <a class="reference internal" href="#email.encoders.encode_quopri" title="email.encoders.encode_quopri"><code class="xref py py-meth docutils literal notranslate"><span class="pre">encode_quopri()</span></code></a> also encodes all tabs and space
|
|||
|
|
characters in the data.</p>
|
|||
|
|
</dd>
|
|||
|
|
</dl>
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
|
|||
|
|
<div class="sphinxsidebarwrapper">
|
|||
|
|
<h4>Previous topic</h4>
|
|||
|
|
<p class="topless"><a href="email.charset.html"
|
|||
|
|
title="previous chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">email.charset</span></code>: Representing character sets</a></p>
|
|||
|
|
<h4>Next topic</h4>
|
|||
|
|
<p class="topless"><a href="email.utils.html"
|
|||
|
|
title="next chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">email.utils</span></code>: Miscellaneous utilities</a></p>
|
|||
|
|
<div role="note" aria-label="source link">
|
|||
|
|
<h3>This Page</h3>
|
|||
|
|
<ul class="this-page-menu">
|
|||
|
|
<li><a href="../bugs.html">Report a Bug</a></li>
|
|||
|
|
<li>
|
|||
|
|
<a href="https://github.com/python/cpython/blob/3.7/Doc/library/email.encoders.rst"
|
|||
|
|
rel="nofollow">Show Source
|
|||
|
|
</a>
|
|||
|
|
</li>
|
|||
|
|
</ul>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="clearer"></div>
|
|||
|
|
</div>
|
|||
|
|
<div class="related" role="navigation" aria-label="related navigation">
|
|||
|
|
<h3>Navigation</h3>
|
|||
|
|
<ul>
|
|||
|
|
<li class="right" style="margin-right: 10px">
|
|||
|
|
<a href="../genindex.html" title="General Index"
|
|||
|
|
>index</a></li>
|
|||
|
|
<li class="right" >
|
|||
|
|
<a href="../py-modindex.html" title="Python Module Index"
|
|||
|
|
>modules</a> |</li>
|
|||
|
|
<li class="right" >
|
|||
|
|
<a href="email.utils.html" title="email.utils: Miscellaneous utilities"
|
|||
|
|
>next</a> |</li>
|
|||
|
|
<li class="right" >
|
|||
|
|
<a href="email.charset.html" title="email.charset: Representing character sets"
|
|||
|
|
>previous</a> |</li>
|
|||
|
|
<li><img src="../_static/py.png" alt=""
|
|||
|
|
style="vertical-align: middle; margin-top: -1px"/></li>
|
|||
|
|
<li><a href="https://www.python.org/">Python</a> »</li>
|
|||
|
|
<li>
|
|||
|
|
<span class="language_switcher_placeholder">en</span>
|
|||
|
|
<span class="version_switcher_placeholder">3.7.4</span>
|
|||
|
|
<a href="../index.html">Documentation </a> »
|
|||
|
|
</li>
|
|||
|
|
|
|||
|
|
<li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li>
|
|||
|
|
<li class="nav-item nav-item-2"><a href="netdata.html" >Internet Data Handling</a> »</li>
|
|||
|
|
<li class="nav-item nav-item-3"><a href="email.html" ><code class="xref py py-mod docutils literal notranslate"><span class="pre">email</span></code> — An email and MIME handling package</a> »</li>
|
|||
|
|
<li class="right">
|
|||
|
|
|
|||
|
|
|
|||
|
|
<div class="inline-search" style="display: none" role="search">
|
|||
|
|
<form class="inline-search" action="../search.html" method="get">
|
|||
|
|
<input placeholder="Quick search" type="text" name="q" />
|
|||
|
|
<input type="submit" value="Go" />
|
|||
|
|
<input type="hidden" name="check_keywords" value="yes" />
|
|||
|
|
<input type="hidden" name="area" value="default" />
|
|||
|
|
</form>
|
|||
|
|
</div>
|
|||
|
|
<script type="text/javascript">$('.inline-search').show(0);</script>
|
|||
|
|
|
|
|||
|
|
</li>
|
|||
|
|
|
|||
|
|
</ul>
|
|||
|
|
</div>
|
|||
|
|
<div class="footer">
|
|||
|
|
© <a href="../copyright.html">Copyright</a> 2001-2019, Python Software Foundation.
|
|||
|
|
<br />
|
|||
|
|
The Python Software Foundation is a non-profit corporation.
|
|||
|
|
<a href="https://www.python.org/psf/donations/">Please donate.</a>
|
|||
|
|
<br />
|
|||
|
|
Last updated on Jul 13, 2019.
|
|||
|
|
<a href="../bugs.html">Found a bug</a>?
|
|||
|
|
<br />
|
|||
|
|
Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 2.0.1.
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
</body>
|
|||
|
|
</html>
|