<!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>sys – System-specific Configuration — Python Module of the Week</title>
<link rel="stylesheet" href="../_static/sphinxdoc.css" type="text/css" />
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT: '../',
VERSION: '1.132',
COLLAPSE_INDEX: false,
FILE_SUFFIX: '.html',
HAS_SOURCE: true
};
</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>
<link rel="author" title="About these documents" href="../about.html" />
<link rel="top" title="Python Module of the Week" href="../index.html" />
<link rel="up" title="Python Runtime Services" href="../runtime_services.html" />
<link rel="next" title="Interpreter Settings" href="interpreter.html" />
<link rel="prev" title="site – Site-wide configuration" href="../site/index.html" />
</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="../py-modindex.html" title="Python Module Index"
>modules</a> |</li>
<li class="right" >
<a href="interpreter.html" title="Interpreter Settings"
accesskey="N">next</a> |</li>
<li class="right" >
<a href="../site/index.html" title="site – Site-wide configuration"
accesskey="P">previous</a> |</li>
<li><a href="../contents.html">PyMOTW</a> »</li>
<li><a href="../runtime_services.html" accesskey="U">Python Runtime Services</a> »</li>
</ul>
</div>
<div class="sphinxsidebar">
<div class="sphinxsidebarwrapper">
<h4>Previous topic</h4>
<p class="topless"><a href="../site/index.html"
title="previous chapter">site – Site-wide configuration</a></p>
<h4>Next topic</h4>
<p class="topless"><a href="interpreter.html"
title="next chapter">Interpreter Settings</a></p>
<h3>This Page</h3>
<ul class="this-page-menu">
<li><a href="../_sources/sys/index.txt"
rel="nofollow">Show Source</a></li>
</ul>
<div id="searchbox" style="display: none">
<h3>Quick search</h3>
<form class="search" action="../search.html" method="get">
<input type="text" name="q" size="18" />
<input type="submit" value="Go" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
<p class="searchtip" style="font-size: 90%">
Enter search terms or a module, class or function name.
</p>
</div>
<script type="text/javascript">$('#searchbox').show(0);</script>
</div>
</div>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body">
<div class="section" id="module-sys">
<span id="sys-system-specific-configuration"></span><h1>sys – System-specific Configuration<a class="headerlink" href="#module-sys" title="Permalink to this headline">¶</a></h1>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Purpose:</th><td class="field-body">Provides system-specific configuration and operations.</td>
</tr>
<tr class="field"><th class="field-name">Python Version:</th><td class="field-body">1.4 and later</td>
</tr>
</tbody>
</table>
<p>The <a class="reference internal" href="#module-sys" title="sys: System-specific configuration"><tt class="xref py py-mod docutils literal"><span class="pre">sys</span></tt></a> module includes a collection of services for probing or
changing the configuration of the interpreter at runtime and resources
for interacting with the operating environment outside of the current
program.</p>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="interpreter.html">Interpreter Settings</a><ul>
<li class="toctree-l2"><a class="reference internal" href="interpreter.html#build-time-version-information">Build-time Version Information</a></li>
<li class="toctree-l2"><a class="reference internal" href="interpreter.html#install-location">Install Location</a></li>
<li class="toctree-l2"><a class="reference internal" href="interpreter.html#command-line-options">Command Line Options</a></li>
<li class="toctree-l2"><a class="reference internal" href="interpreter.html#unicode-defaults">Unicode Defaults</a></li>
<li class="toctree-l2"><a class="reference internal" href="interpreter.html#interactive-prompts">Interactive Prompts</a></li>
<li class="toctree-l2"><a class="reference internal" href="interpreter.html#display-hook">Display Hook</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="runtime.html">Runtime Environment</a><ul>
<li class="toctree-l2"><a class="reference internal" href="runtime.html#command-line-arguments">Command Line Arguments</a></li>
<li class="toctree-l2"><a class="reference internal" href="runtime.html#input-and-output-steams">Input and Output Steams</a></li>
<li class="toctree-l2"><a class="reference internal" href="runtime.html#returning-status">Returning Status</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="limits.html">Memory Management and Limits</a><ul>
<li class="toctree-l2"><a class="reference internal" href="limits.html#reference-counts">Reference Counts</a></li>
<li class="toctree-l2"><a class="reference internal" href="limits.html#object-size">Object Size</a></li>
<li class="toctree-l2"><a class="reference internal" href="limits.html#recursion">Recursion</a></li>
<li class="toctree-l2"><a class="reference internal" href="limits.html#maximum-values">Maximum Values</a></li>
<li class="toctree-l2"><a class="reference internal" href="limits.html#floating-point-values">Floating Point Values</a></li>
<li class="toctree-l2"><a class="reference internal" href="limits.html#byte-ordering">Byte Ordering</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="exceptions.html">Exception Handling</a><ul>
<li class="toctree-l2"><a class="reference internal" href="exceptions.html#unhandled-exceptions">Unhandled Exceptions</a></li>
<li class="toctree-l2"><a class="reference internal" href="exceptions.html#current-exception">Current Exception</a></li>
<li class="toctree-l2"><a class="reference internal" href="exceptions.html#previous-interactive-exception">Previous Interactive Exception</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="tracing.html">Tracing a Program As It Runs</a><ul>
<li class="toctree-l2"><a class="reference internal" href="tracing.html#tracing-function-calls">Tracing Function Calls</a></li>
<li class="toctree-l2"><a class="reference internal" href="tracing.html#tracing-inside-functions">Tracing Inside Functions</a></li>
<li class="toctree-l2"><a class="reference internal" href="tracing.html#watching-the-stack">Watching the Stack</a></li>
<li class="toctree-l2"><a class="reference internal" href="tracing.html#exception-propagation">Exception Propagation</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="threads.html">Low-level Thread Support</a><ul>
<li class="toctree-l2"><a class="reference internal" href="threads.html#check-interval">Check Interval</a></li>
<li class="toctree-l2"><a class="reference internal" href="threads.html#debugging">Debugging</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="imports.html">Modules and Imports</a><ul>
<li class="toctree-l2"><a class="reference internal" href="imports.html#imported-modules">Imported Modules</a></li>
<li class="toctree-l2"><a class="reference internal" href="imports.html#built-in-modules">Built-in Modules</a></li>
<li class="toctree-l2"><a class="reference internal" href="imports.html#import-path">Import Path</a></li>
<li class="toctree-l2"><a class="reference internal" href="imports.html#custom-importers">Custom Importers</a></li>
<li class="toctree-l2"><a class="reference internal" href="imports.html#importer-cache">Importer Cache</a></li>
<li class="toctree-l2"><a class="reference internal" href="imports.html#meta-path">Meta Path</a></li>
</ul>
</li>
</ul>
</div>
<div class="admonition-see-also admonition seealso">
<p class="first admonition-title">See also</p>
<dl class="last docutils">
<dt><a class="reference external" href="http://docs.python.org/library/sys.html">sys</a></dt>
<dd>The standard library documentation for this module.</dd>
</dl>
</div>
</div>
</div>
</div>
</div>
<div class="clearer"></div>
</div>
<div class="related">
<h3>Navigation</h3>
<ul>
<li class="right" style="margin-right: 10px">
<a href="../genindex.html" title="General Index"
>index</a></li>
<li class="right" >
<a href="../py-modindex.html" title="Python Module Index"
>modules</a> |</li>
<li class="right" >
<a href="interpreter.html" title="Interpreter Settings"
>next</a> |</li>
<li class="right" >
<a href="../site/index.html" title="site – Site-wide configuration"
>previous</a> |</li>
<li><a href="../contents.html">PyMOTW</a> »</li>
<li><a href="../runtime_services.html" >Python Runtime Services</a> »</li>
</ul>
</div>
<div class="footer">
© Copyright Doug Hellmann.
Last updated on Oct 24, 2010.
Created using <a href="http://sphinx.pocoo.org/">Sphinx</a>.
<br/><a href="http://creativecommons.org/licenses/by-nc-sa/3.0/us/" rel="license"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-sa/3.0/us/88x31.png"/></a>
</div>
</body>
</html>