<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8" /> <title>Networking and Interprocess Communication — Python 3.7.4 documentation</title> <link rel="stylesheet" href="../_static/pydoctheme.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 3.7.4 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="asyncio — Asynchronous I/O" href="asyncio.html" /> <link rel="prev" title="contextvars — Context Variables" href="contextvars.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <link rel="canonical" href="https://docs.python.org/3/library/ipc.html" /> <script type="text/javascript" src="../_static/copybutton.js"></script> <script type="text/javascript" src="../_static/switchers.js"></script> <style> @media only screen { table.full-width-table { width: 100%; } } </style> </head><body> <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="asyncio.html" title="asyncio — Asynchronous I/O" accesskey="N">next</a> |</li> <li class="right" > <a href="contextvars.html" title="contextvars — Context Variables" 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> <span class="language_switcher_placeholder">en</span> <span class="version_switcher_placeholder">3.7.4</span> <a href="../index.html">Documentation </a> » </li> <li class="nav-item nav-item-1"><a href="index.html" accesskey="U">The Python Standard Library</a> »</li> <li class="right"> <div class="inline-search" style="display: none" role="search"> <form class="inline-search" action="../search.html" method="get"> <input placeholder="Quick search" type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> <script type="text/javascript">$('.inline-search').show(0);</script> | </li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="networking-and-interprocess-communication"> <span id="ipc"></span><h1>Networking and Interprocess Communication<a class="headerlink" href="#networking-and-interprocess-communication" title="Permalink to this headline">¶</a></h1> <p>The modules described in this chapter provide mechanisms for networking and inter-processes communication.</p> <p>Some modules only work for two processes that are on the same machine, e.g. <a class="reference internal" href="signal.html#module-signal" title="signal: Set handlers for asynchronous events."><code class="xref py py-mod docutils literal notranslate"><span class="pre">signal</span></code></a> and <a class="reference internal" href="mmap.html#module-mmap" title="mmap: Interface to memory-mapped files for Unix and Windows."><code class="xref py py-mod docutils literal notranslate"><span class="pre">mmap</span></code></a>. Other modules support networking protocols that two or more processes can use to communicate across machines.</p> <p>The list of modules described in this chapter is:</p> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="asyncio.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">asyncio</span></code> — Asynchronous I/O</a></li> <li class="toctree-l1"><a class="reference internal" href="socket.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">socket</span></code> — Low-level networking interface</a></li> <li class="toctree-l1"><a class="reference internal" href="ssl.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">ssl</span></code> — TLS/SSL wrapper for socket objects</a></li> <li class="toctree-l1"><a class="reference internal" href="select.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">select</span></code> — Waiting for I/O completion</a></li> <li class="toctree-l1"><a class="reference internal" href="selectors.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">selectors</span></code> — High-level I/O multiplexing</a></li> <li class="toctree-l1"><a class="reference internal" href="asyncore.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">asyncore</span></code> — Asynchronous socket handler</a></li> <li class="toctree-l1"><a class="reference internal" href="asynchat.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">asynchat</span></code> — Asynchronous socket command/response handler</a></li> <li class="toctree-l1"><a class="reference internal" href="signal.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">signal</span></code> — Set handlers for asynchronous events</a></li> <li class="toctree-l1"><a class="reference internal" href="mmap.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">mmap</span></code> — Memory-mapped file support</a></li> </ul> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="contextvars.html" title="previous chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">contextvars</span></code> — Context Variables</a></p> <h4>Next topic</h4> <p class="topless"><a href="asyncio.html" title="next chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">asyncio</span></code> — Asynchronous I/O</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../bugs.html">Report a Bug</a></li> <li> <a href="https://github.com/python/cpython/blob/3.7/Doc/library/ipc.rst" rel="nofollow">Show Source </a> </li> </ul> </div> </div> </div> <div class="clearer"></div> </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" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="asyncio.html" title="asyncio — Asynchronous I/O" >next</a> |</li> <li class="right" > <a href="contextvars.html" title="contextvars — Context Variables" >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> <span class="language_switcher_placeholder">en</span> <span class="version_switcher_placeholder">3.7.4</span> <a href="../index.html">Documentation </a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> <li class="right"> <div class="inline-search" style="display: none" role="search"> <form class="inline-search" action="../search.html" method="get"> <input placeholder="Quick search" type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> <script type="text/javascript">$('.inline-search').show(0);</script> | </li> </ul> </div> <div class="footer"> © <a href="../copyright.html">Copyright</a> 2001-2019, Python Software Foundation. <br /> The Python Software Foundation is a non-profit corporation. <a href="https://www.python.org/psf/donations/">Please donate.</a> <br /> Last updated on Jul 13, 2019. <a href="../bugs.html">Found a bug</a>? <br /> Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 2.0.1. </div> </body> </html>