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<div class="section" id="module-quopri">
<h1>19.15. <tt class="xref docutils literal"><span class="pre">quopri</span></tt> — Encode and decode MIME quoted-printable data<a class="headerlink" href="#module-quopri" title="Permalink to this headline">¶</a></h1>
<p id="index-514">This module performs quoted-printable transport encoding and decoding, as
defined in <span class="target" id="index-515"></span><a class="reference external" href="http://tools.ietf.org/html/rfc1521.html"><strong>RFC 1521</strong></a>: “MIME (Multipurpose Internet Mail Extensions) Part One:
Mechanisms for Specifying and Describing the Format of Internet Message Bodies”.
The quoted-printable encoding is designed for data where there are relatively
few nonprintable characters; the base64 encoding scheme available via the
<a title="RFC 3548: Base16, Base32, Base64 Data Encodings" class="reference external" href="base64.html#module-base64"><tt class="xref docutils literal"><span class="pre">base64</span></tt></a> module is more compact if there are many such characters, as when
sending a graphics file.</p>
<dl class="function">
<dt id="quopri.decode">
<tt class="descclassname">quopri.</tt><tt class="descname">decode</tt><big>(</big><em>input</em>, <em>output</em><span class="optional">[</span>, <em>header</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#quopri.decode" title="Permalink to this definition">¶</a></dt>
<dd>Decode the contents of the <em>input</em> file and write the resulting decoded binary
data to the <em>output</em> file. <em>input</em> and <em>output</em> must either be file objects or
objects that mimic the file object interface. <em>input</em> will be read until
<tt class="docutils literal"><span class="pre">input.readline()</span></tt> returns an empty string. If the optional argument <em>header</em>
is present and true, underscore will be decoded as space. This is used to decode
“Q”-encoded headers as described in <span class="target" id="index-516"></span><a class="reference external" href="http://tools.ietf.org/html/rfc1522.html"><strong>RFC 1522</strong></a>: “MIME (Multipurpose Internet
Mail Extensions) Part Two: Message Header Extensions for Non-ASCII Text”.</dd></dl>
<dl class="function">
<dt id="quopri.encode">
<tt class="descclassname">quopri.</tt><tt class="descname">encode</tt><big>(</big><em>input</em>, <em>output</em>, <em>quotetabs</em><big>)</big><a class="headerlink" href="#quopri.encode" title="Permalink to this definition">¶</a></dt>
<dd>Encode the contents of the <em>input</em> file and write the resulting quoted-printable
data to the <em>output</em> file. <em>input</em> and <em>output</em> must either be file objects or
objects that mimic the file object interface. <em>input</em> will be read until
<tt class="docutils literal"><span class="pre">input.readline()</span></tt> returns an empty string. <em>quotetabs</em> is a flag which
controls whether to encode embedded spaces and tabs; when true it encodes such
embedded whitespace, and when false it leaves them unencoded. Note that spaces
and tabs appearing at the end of lines are always encoded, as per <span class="target" id="index-517"></span><a class="reference external" href="http://tools.ietf.org/html/rfc1521.html"><strong>RFC 1521</strong></a>.</dd></dl>
<dl class="function">
<dt id="quopri.decodestring">
<tt class="descclassname">quopri.</tt><tt class="descname">decodestring</tt><big>(</big><em>s</em><span class="optional">[</span>, <em>header</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#quopri.decodestring" title="Permalink to this definition">¶</a></dt>
<dd>Like <a title="quopri.decode" class="reference internal" href="#quopri.decode"><tt class="xref docutils literal"><span class="pre">decode()</span></tt></a>, except that it accepts a source string and returns the
corresponding decoded string.</dd></dl>
<dl class="function">
<dt id="quopri.encodestring">
<tt class="descclassname">quopri.</tt><tt class="descname">encodestring</tt><big>(</big><em>s</em><span class="optional">[</span>, <em>quotetabs</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#quopri.encodestring" title="Permalink to this definition">¶</a></dt>
<dd>Like <a title="quopri.encode" class="reference internal" href="#quopri.encode"><tt class="xref docutils literal"><span class="pre">encode()</span></tt></a>, except that it accepts a source string and returns the
corresponding encoded string. <em>quotetabs</em> is optional (defaulting to 0), and is
passed straight through to <a title="quopri.encode" class="reference internal" href="#quopri.encode"><tt class="xref docutils literal"><span class="pre">encode()</span></tt></a>.</dd></dl>
<div class="admonition-see-also admonition seealso">
<p class="first admonition-title">See also</p>
<dl class="last docutils">
<dt>Module <a title="Mimification and unmimification of mail messages. (deprecated)" class="reference external" href="mimify.html#module-mimify"><tt class="xref docutils literal"><span class="pre">mimify</span></tt></a></dt>
<dd>General utilities for processing of MIME messages.</dd>
<dt>Module <a title="RFC 3548: Base16, Base32, Base64 Data Encodings" class="reference external" href="base64.html#module-base64"><tt class="xref docutils literal"><span class="pre">base64</span></tt></a></dt>
<dd>Encode and decode MIME base64 data</dd>
</dl>
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