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<H1><A NAME="SECTION00141600000000000000000">
12.16 <tt class="module">mimify</tt> --
         MIME processing of mail messages</A>
</H1>

<P>


<P>
The mimify module defines two functions to convert mail messages to
and from MIME format.  The mail message can be either a simple message
or a so-called multipart message.  Each part is treated separately.
Mimifying (a part of) a message entails encoding the message as
quoted-printable if it contains any characters that cannot be
represented using 7-bit ASCII.  Unmimifying (a part of) a message
entails undoing the quoted-printable encoding.  Mimify and unmimify
are especially useful when a message has to be edited before being
sent.  Typical use would be:

<P>
<dl><dd><pre class="verbatim">
unmimify message
edit message
mimify message
send message
</pre></dl>

<P>
The modules defines the following user-callable functions and
user-settable variables:

<P>
<dl><dt><b><a name='l2h-2535'><tt class='function'>mimify</tt></a></b> (<var>infile, outfile</var>)
<dd>
Copy the message in <var>infile</var> to <var>outfile</var>, converting parts to
quoted-printable and adding MIME mail headers when necessary.
<var>infile</var> and <var>outfile</var> can be file objects (actually, any
object that has a <tt class="method">readline()</tt> method (for <var>infile</var>) or a
<tt class="method">write()</tt> method (for <var>outfile</var>)) or strings naming the files.
If <var>infile</var> and <var>outfile</var> are both strings, they may have the
same value.
</dl>

<P>
<dl><dt><b><a name='l2h-2536'><tt class='function'>unmimify</tt></a></b> (<var>infile, outfile</var><big>[</big><var>, decode_base64</var><big>]</big>)
<dd>
Copy the message in <var>infile</var> to <var>outfile</var>, decoding all
quoted-printable parts.  <var>infile</var> and <var>outfile</var> can be file
objects (actually, any object that has a <tt class="method">readline()</tt> method (for
<var>infile</var>) or a <tt class="method">write()</tt> method (for <var>outfile</var>)) or strings
naming the files.  If <var>infile</var> and <var>outfile</var> are both strings,
they may have the same value.
If the <var>decode_base64</var> argument is provided and tests true, any
parts that are coded in the base64 encoding are decoded as well.
</dl>

<P>
<dl><dt><b><a name='l2h-2537'><tt class='function'>mime_decode_header</tt></a></b> (<var>line</var>)
<dd>
Return a decoded version of the encoded header line in <var>line</var>.
</dl>

<P>
<dl><dt><b><a name='l2h-2538'><tt class='function'>mime_encode_header</tt></a></b> (<var>line</var>)
<dd>
Return a MIME-encoded version of the header line in <var>line</var>.
</dl>

<P>
<dl><dt><b><a name='l2h-2539'><tt>MAXLEN</tt></a></b>
<dd>
By default, a part will be encoded as quoted-printable when it
contains any non-ASCII characters (i.e., characters with the 8th bit
set), or if there are any lines longer than <tt class="constant">MAXLEN</tt> characters
(default value 200).  
</dl>

<P>
<dl><dt><b><a name='l2h-2540'><tt>CHARSET</tt></a></b>
<dd>
When not specified in the mail headers, a character set must be filled
in.  The string used is stored in <tt class="constant">CHARSET</tt>, and the default
value is ISO-8859-1 (also known as Latin1 (latin-one)).
</dl>

<P>
This module can also be used from the command line.  Usage is as
follows:
<dl><dd><pre class="verbatim">
mimify.py -e [-l length] [infile [outfile]]
mimify.py -d [-b] [infile [outfile]]
</pre></dl>
to encode (mimify) and decode (unmimify) respectively.  <var>infile</var>
defaults to standard input, <var>outfile</var> defaults to standard output.
The same file can be specified for input and output.

<P>
If the <b>-l</b> option is given when encoding, if there are any lines
longer than the specified <var>length</var>, the containing part will be
encoded.

<P>
If the <b>-b</b> option is given when decoding, any base64 parts will
be decoded as well.

<P>
<div class='seealso'>
  <p class='heading'><b>See Also:</b></p>

  <dl compact class="seemodule">
    <dt>Module <b><tt class='module'><a href="module-quopri.html" tppabs="http://www.python.org/doc/current/lib/module-quopri.html">quopri</a></tt>:</b>
    <dd>Encode and decode MIME quoted-printable files.
  </dl>
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