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Overview — Python v2.6.9 documentation
<!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="Content-Type" content="text/html; charset=utf-8" /> <title>Overview — Python v2.6.9 documentation</title> <link rel="stylesheet" href="_static/default.css" type="text/css" /> <link rel="stylesheet" href="_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '#', VERSION: '2.6.9', COLLAPSE_MODINDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="_static/jquery.js"></script> <script type="text/javascript" src="_static/doctools.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python v2.6.9 documentation" href="_static/opensearch.xml"/> <link rel="author" title="About these documents" href="about.html" /> <link rel="copyright" title="Copyright" href="copyright.html" /> <link rel="top" title="Python v2.6.9 documentation" href="#" /> <link rel="shortcut icon" type="image/png" href="_static/py.png" /> </head> <body> <div class="related"> <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="modindex.html" title="Global Module Index" accesskey="M">modules</a> |</li> <li><img src="_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="http://www.python.org/">Python</a> »</li> <li> <a href="#">Python v2.6.9 documentation</a> » </li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <h1>Python v2.6.9 documentation</h1> <p> Welcome! This is the documentation for Python 2.6.9, last updated Oct 29, 2013. </p> <p><strong>Parts of the documentation:</strong></p> <table class="contentstable" align="center"><tr> <td width="50%"> <p class="biglink"><a class="biglink" href="whatsnew/2.6.html">What's new in Python 2.6?</a><br/> <span class="linkdescr">or <a href="whatsnew/index.html">all "What's new" documents</a> since 2.0</span></p> <p class="biglink"><a class="biglink" href="tutorial/index.html">Tutorial</a><br/> <span class="linkdescr">start here</span></p> <p class="biglink"><a class="biglink" href="using/index.html">Using Python</a><br/> <span class="linkdescr">how to use Python on different platforms</span></p> <p class="biglink"><a class="biglink" href="library/index.html">Library Reference</a><br/> <span class="linkdescr">keep this under your pillow</span></p> <p class="biglink"><a class="biglink" href="reference/index.html">Language Reference</a><br/> <span class="linkdescr">describes syntax and language elements</span></p> <p class="biglink"><a class="biglink" href="howto/index.html">Python HOWTOs</a><br/> <span class="linkdescr">in-depth documents on specific topics</span></p> </td><td width="50%"> <p class="biglink"><a class="biglink" href="extending/index.html">Extending and Embedding</a><br/> <span class="linkdescr">tutorial for C/C++ programmers</span></p> <p class="biglink"><a class="biglink" href="c-api/index.html">Python/C API</a><br/> <span class="linkdescr">reference for C/C++ programmers</span></p> <p class="biglink"><a class="biglink" href="install/index.html">Installing Python Modules</a><br/> <span class="linkdescr">information for installers & sys-admins</span></p> <p class="biglink"><a class="biglink" href="distutils/index.html">Distributing Python Modules</a><br/> <span class="linkdescr">sharing modules with others</span></p> <p class="biglink"><a class="biglink" href="documenting/index.html">Documenting Python</a><br/> <span class="linkdescr">guide for documentation authors</span></p> <p class="biglink"><a class="biglink" href="faq/index.html">FAQs</a><br/> <span class="linkdescr">frequently asked questions (with answers!)</span></p> </td></tr> </table> <p><strong>Indices and tables:</strong></p> <table class="contentstable" align="center"><tr> <td width="50%"> <p class="biglink"><a class="biglink" href="modindex.html">Global Module Index</a><br/> <span class="linkdescr">quick access to all modules</span></p> <p class="biglink"><a class="biglink" href="genindex.html">General Index</a><br/> <span class="linkdescr">all functions, classes, terms</span></p> <p class="biglink"><a class="biglink" href="glossary.html">Glossary</a><br/> <span class="linkdescr">the most important terms explained</span></p> </td><td width="50%"> <p class="biglink"><a class="biglink" href="search.html">Search page</a><br/> <span class="linkdescr">search this documentation</span></p> <p class="biglink"><a class="biglink" href="contents.html">Complete Table of Contents</a><br/> <span class="linkdescr">lists all sections and subsections</span></p> </td></tr> </table> <p><strong>Meta information:</strong></p> <table class="contentstable" align="center"><tr> <td width="50%"> <p class="biglink"><a class="biglink" href="bugs.html">Reporting bugs</a></p> <p class="biglink"><a class="biglink" href="about.html">About the documentation</a></p> </td><td width="50%"> <p class="biglink"><a class="biglink" href="license.html">History and License of Python</a></p> <p class="biglink"><a class="biglink" href="copyright.html">Copyright</a></p> </td></tr> </table> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h3>Download</h3> <p><a href="download.html">Download these documents</a></p> <h3>Docs for other versions</h3> <ul> <li><a href="http://docs.python.org/2.7/">Python 2.7 (stable)</a></li> <li><a href="http://docs.python.org/3.1/">Python 3.1 (stable)</a></li> <li><a href="http://docs.python.org/dev/py3k/">Python 3.2 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