korsygfhrtzangaiide
Elepffwdsff
/
usr
/
share
/
doc
/
python-docs-2.7.5
/
html
/
library
/
Upload FileeE
HOME
<!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>16.4. dummy_threading — Drop-in replacement for the threading module — Python 2.7.5 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: '2.7.5', 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> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 2.7.5 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 2.7.5 documentation" href="../index.html" /> <link rel="up" title="16. Optional Operating System Services" href="someos.html" /> <link rel="next" title="16.5. dummy_thread — Drop-in replacement for the thread module" href="dummy_thread.html" /> <link rel="prev" title="16.3. thread — Multiple threads of control" href="thread.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <script type="text/javascript" src="../_static/copybutton.js"></script> </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="dummy_thread.html" title="16.5. dummy_thread — Drop-in replacement for the thread module" accesskey="N">next</a> |</li> <li class="right" > <a href="thread.html" title="16.3. thread — Multiple threads of control" accesskey="P">previous</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="../index.html">Python 2.7.5 documentation</a> » </li> <li><a href="index.html" >The Python Standard Library</a> »</li> <li><a href="someos.html" accesskey="U">16. Optional Operating System Services</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="module-dummy_threading"> <span id="dummy-threading-drop-in-replacement-for-the-threading-module"></span><h1>16.4. <a class="reference internal" href="#module-dummy_threading" title="dummy_threading: Drop-in replacement for the threading module."><tt class="xref py py-mod docutils literal"><span class="pre">dummy_threading</span></tt></a> — Drop-in replacement for the <a class="reference internal" href="threading.html#module-threading" title="threading: Higher-level threading interface."><tt class="xref py py-mod docutils literal"><span class="pre">threading</span></tt></a> module<a class="headerlink" href="#module-dummy_threading" title="Permalink to this headline">¶</a></h1> <p><strong>Source code:</strong> <a class="reference external" href="http://hg.python.org/cpython/file/2.7/Lib/dummy_threading.py">Lib/dummy_threading.py</a></p> <hr class="docutils" /> <p>This module provides a duplicate interface to the <a class="reference internal" href="threading.html#module-threading" title="threading: Higher-level threading interface."><tt class="xref py py-mod docutils literal"><span class="pre">threading</span></tt></a> module. It is meant to be imported when the <a class="reference internal" href="thread.html#module-thread" title="thread: Create multiple threads of control within one interpreter."><tt class="xref py py-mod docutils literal"><span class="pre">thread</span></tt></a> module is not provided on a platform.</p> <p>Suggested usage is:</p> <div class="highlight-python"><div class="highlight"><pre><span class="k">try</span><span class="p">:</span> <span class="kn">import</span> <span class="nn">threading</span> <span class="kn">as</span> <span class="nn">_threading</span> <span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span> <span class="kn">import</span> <span class="nn">dummy_threading</span> <span class="kn">as</span> <span class="nn">_threading</span> </pre></div> </div> <p>Be careful to not use this module where deadlock might occur from a thread being created that blocks waiting for another thread to be created. This often occurs with blocking I/O.</p> </div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="thread.html" title="previous chapter">16.3. <tt class="docutils literal"><span class="pre">thread</span></tt> — Multiple threads of control</a></p> <h4>Next topic</h4> <p class="topless"><a href="dummy_thread.html" title="next chapter">16.5. <tt class="docutils literal"><span class="pre">dummy_thread</span></tt> — Drop-in replacement for the <tt class="docutils literal"><span class="pre">thread</span></tt> module</a></p> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../bugs.html">Report a Bug</a></li> <li><a href="../_sources/library/dummy_threading.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" /> <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="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="dummy_thread.html" title="16.5. dummy_thread — Drop-in replacement for the thread module" >next</a> |</li> <li class="right" > <a href="thread.html" title="16.3. thread — Multiple threads of control" >previous</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="../index.html">Python 2.7.5 documentation</a> » </li> <li><a href="index.html" >The Python Standard Library</a> »</li> <li><a href="someos.html" >16. Optional Operating System Services</a> »</li> </ul> </div> <div class="footer"> © <a href="../copyright.html">Copyright</a> 1990-2019, Python Software Foundation. <br /> The Python Software Foundation is a non-profit corporation. <a href="http://www.python.org/psf/donations/">Please donate.</a> <br /> Last updated on Jul 03, 2019. <a href="../bugs.html">Found a bug</a>? <br /> Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.1.3. </div> </body> </html>