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<title>7.18 zipfile -- Work with ZIP archives</title>
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<H1><A NAME="SECTION0091800000000000000000">
7.18 <tt class="module">zipfile</tt> --
         Work with ZIP archives</A>
</H1>

<P>
<A NAME="module-zipfile"></A>

<P>

<span class="versionnote">New in version 1.6.</span>

<P>
The ZIP file format is a common archive and compression standard.
This module provides tools to create, read, write, append, and list a
ZIP file.  Any advanced use of this module will require an
understanding of the format, as defined in
<em class="citetitle"><a
 href="http://www.pkware.com/appnote.html"
 title="PKZIP Application
Note"
 >PKZIP Application
Note</a></em>.

<P>
This module does not currently handle ZIP files which have appended
comments, or multi-disk ZIP files.

<P>
The available attributes of this module are:

<P>
<dl><dt><b><span class="typelabel">exception</span>&nbsp;<tt id='l2h-2851' xml:id='l2h-2851' class="exception">error</tt></b></dt>
<dd>
  The error raised for bad ZIP files.
</dd></dl>

<P>
<dl><dt><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-2852' xml:id='l2h-2852' class="class">ZipFile</tt></b>
<dd>
  The class for reading and writing ZIP files.  See
  ``<em class="citetitle"
 >ZipFile Objects</em>'' (section <A href="zipfile-objects.html#zipfile-objects">7.18.1</A>) for
  constructor details.
</dl>

<P>
<dl><dt><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-2853' xml:id='l2h-2853' class="class">PyZipFile</tt></b>
<dd>
  Class for creating ZIP archives containing Python libraries.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-2854' xml:id='l2h-2854' class="class">ZipInfo</tt></b>(</nobr></td>
  <td><var></var><big>[</big><var>filename</var><big>[</big><var>, date_time</var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt>
<dd>
  Class used to represent information about a member of an archive.
  Instances of this class are returned by the <tt class="method">getinfo()</tt> and
  <tt class="method">infolist()</tt> methods of <tt class="class">ZipFile</tt> objects.  Most users
  of the <tt class="module">zipfile</tt> module will not need to create these, but
  only use those created by this module.
  <var>filename</var> should be the full name of the archive member, and
  <var>date_time</var> should be a tuple containing six fields which
  describe the time of the last modification to the file; the fields
  are described in section <A href="zipinfo-objects.html#zipinfo-objects">7.18.3</A>, ``ZipInfo Objects.''
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-2855' xml:id='l2h-2855' class="function">is_zipfile</tt></b>(</nobr></td>
  <td><var>filename</var>)</td></tr></table></dt>
<dd>
  Returns <code>True</code> if <var>filename</var> is a valid ZIP file based on its magic
  number, otherwise returns <code>False</code>.  This module does not currently
  handle ZIP files which have appended comments.
</dl>

<P>
<dl><dt><b><tt id='l2h-2856' xml:id='l2h-2856'>ZIP_STORED</tt></b></dt>
<dd>
  The numeric constant for an uncompressed archive member.
</dd></dl>

<P>
<dl><dt><b><tt id='l2h-2857' xml:id='l2h-2857'>ZIP_DEFLATED</tt></b></dt>
<dd>
  The numeric constant for the usual ZIP compression method.  This
  requires the zlib module.  No other compression methods are
  currently supported.
</dd></dl>

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

  <dl compact="compact" class="seetitle">
    <dt><em class="citetitle"><a href="http://www.pkware.com/appnote.html"
        >PKZIP Application
            Note</a></em></dt>
    <dd>Documentation on the ZIP file format by Phil
            Katz, the creator of the format and algorithms used.</dd>
  </dl>

<P>
<dl compact="compact" class="seetitle">
    <dt><em class="citetitle"><a href="http://www.info-zip.org/pub/infozip/"
        >Info-ZIP Home Page</a></em></dt>
    <dd>
            Information about the Info-ZIP project's ZIP archive
            programs and development libraries.</dd>
  </dl>
</div>

<P>

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<LI><A href="zipfile-objects.html">7.18.1 ZipFile Objects</a>
<LI><A href="pyzipfile-objects.html">7.18.2 PyZipFile Objects</a>
<LI><A href="zipinfo-objects.html">7.18.3 ZipInfo Objects</a>
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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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