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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>12. Data Compression and Archiving — Python 2.7.18 documentation</title> <link rel="stylesheet" href="../_static/classic.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 2.7.18 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="12.1. zlib — Compression compatible with gzip" href="zlib.html" /> <link rel="prev" title="11.13. sqlite3 — DB-API 2.0 interface for SQLite databases" href="sqlite3.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <link rel="canonical" href="file:///usr/share/doc/python2.7/html/library/archiving.html" /> <script type="text/javascript" src="../_static/copybutton.js"></script> </head><body> <div id="outdated-warning" style="padding: .5em; text-align: center; background-color: #FFBABA; color: #6A0E0E;"> This document is for an old version of Python that is <a href="https://devguide.python.org/devcycle/#end-of-life-branches">no longer supported</a>. You should install the python3 and python3-doc packages and read the <a href="file:///usr/share/doc/python3-doc/html/library/archiving.html"> Python documentation for the Python3 version packaged in this release</a>. </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" 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="zlib.html" title="12.1. zlib — Compression compatible with gzip" accesskey="N">next</a> |</li> <li class="right" > <a href="sqlite3.html" title="11.13. sqlite3 — DB-API 2.0 interface for SQLite databases" 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> <a href="../index.html">Python 2.7.18 documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" accesskey="U">The Python Standard Library</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="data-compression-and-archiving"> <span id="archiving"></span><h1>12. Data Compression and Archiving<a class="headerlink" href="#data-compression-and-archiving" title="Permalink to this headline">¶</a></h1> <p>The modules described in this chapter support data compression with the zlib, gzip, and bzip2 algorithms, and the creation of ZIP- and tar-format archives. See also <a class="reference internal" href="shutil.html#archiving-operations"><span class="std std-ref">Archiving operations</span></a> provided by the <a class="reference internal" href="shutil.html#module-shutil" title="shutil: High-level file operations, including copying."><code class="xref py py-mod docutils literal notranslate"><span class="pre">shutil</span></code></a> module.</p> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="zlib.html">12.1. <code class="docutils literal notranslate"><span class="pre">zlib</span></code> — Compression compatible with <strong class="program">gzip</strong></a></li> <li class="toctree-l1"><a class="reference internal" href="gzip.html">12.2. <code class="docutils literal notranslate"><span class="pre">gzip</span></code> — Support for <strong class="program">gzip</strong> files</a><ul> <li class="toctree-l2"><a class="reference internal" href="gzip.html#examples-of-usage">12.2.1. Examples of usage</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="bz2.html">12.3. <code class="docutils literal notranslate"><span class="pre">bz2</span></code> — Compression compatible with <strong class="program">bzip2</strong></a><ul> <li class="toctree-l2"><a class="reference internal" href="bz2.html#de-compression-of-files">12.3.1. (De)compression of files</a></li> <li class="toctree-l2"><a class="reference internal" href="bz2.html#sequential-de-compression">12.3.2. Sequential (de)compression</a></li> <li class="toctree-l2"><a class="reference internal" href="bz2.html#one-shot-de-compression">12.3.3. One-shot (de)compression</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="zipfile.html">12.4. <code class="docutils literal notranslate"><span class="pre">zipfile</span></code> — Work with ZIP archives</a><ul> <li class="toctree-l2"><a class="reference internal" href="zipfile.html#zipfile-objects">12.4.1. ZipFile Objects</a></li> <li class="toctree-l2"><a class="reference internal" href="zipfile.html#pyzipfile-objects">12.4.2. PyZipFile Objects</a></li> <li class="toctree-l2"><a class="reference internal" href="zipfile.html#zipinfo-objects">12.4.3. ZipInfo Objects</a></li> <li class="toctree-l2"><a class="reference internal" href="zipfile.html#command-line-interface">12.4.4. Command-Line Interface</a><ul> <li class="toctree-l3"><a class="reference internal" href="zipfile.html#command-line-options">12.4.4.1. Command-line options</a></li> </ul> </li> <li class="toctree-l2"><a class="reference internal" href="zipfile.html#decompression-pitfalls">12.4.5. Decompression pitfalls</a><ul> <li class="toctree-l3"><a class="reference internal" href="zipfile.html#from-file-itself">12.4.5.1. From file itself</a></li> <li class="toctree-l3"><a class="reference internal" href="zipfile.html#file-system-limitations">12.4.5.2. File System limitations</a></li> <li class="toctree-l3"><a class="reference internal" href="zipfile.html#resources-limitations">12.4.5.3. Resources limitations</a></li> <li class="toctree-l3"><a class="reference internal" href="zipfile.html#interruption">12.4.5.4. Interruption</a></li> <li class="toctree-l3"><a class="reference internal" href="zipfile.html#default-behaviors-of-extraction">12.4.5.5. Default behaviors of extraction</a></li> </ul> </li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="tarfile.html">12.5. <code class="docutils literal notranslate"><span class="pre">tarfile</span></code> — Read and write tar archive files</a><ul> <li class="toctree-l2"><a class="reference internal" href="tarfile.html#tarfile-objects">12.5.1. TarFile Objects</a></li> <li class="toctree-l2"><a class="reference internal" href="tarfile.html#tarinfo-objects">12.5.2. TarInfo Objects</a></li> <li class="toctree-l2"><a class="reference internal" href="tarfile.html#examples">12.5.3. Examples</a></li> <li class="toctree-l2"><a class="reference internal" href="tarfile.html#supported-tar-formats">12.5.4. Supported tar formats</a></li> <li class="toctree-l2"><a class="reference internal" href="tarfile.html#unicode-issues">12.5.5. 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