Edit File: dummy_thread.html
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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_thread"> <span id="dummy-thread-drop-in-replacement-for-the-thread-module"></span><h1>16.5. <a class="reference internal" href="#module-dummy_thread" title="dummy_thread: Drop-in replacement for the thread module."><tt class="xref py py-mod docutils literal"><span class="pre">dummy_thread</span></tt></a> — Drop-in replacement for 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<a class="headerlink" href="#module-dummy_thread" title="Permalink to this headline">¶</a></h1> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">The <a class="reference internal" href="#module-dummy_thread" title="dummy_thread: Drop-in replacement for the thread module."><tt class="xref py py-mod docutils literal"><span class="pre">dummy_thread</span></tt></a> module has been renamed to <tt class="xref py py-mod docutils literal"><span class="pre">_dummy_thread</span></tt> in Python 3. The <a class="reference internal" href="../glossary.html#term-to3"><em class="xref std std-term">2to3</em></a> tool will automatically adapt imports when converting your sources to Python 3; however, you should consider using the high-lever <a class="reference internal" href="dummy_threading.html#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> module instead.</p> </div> <p><strong>Source code:</strong> <a class="reference external" href="http://hg.python.org/cpython/file/2.7/Lib/dummy_thread.py">Lib/dummy_thread.py</a></p> <hr class="docutils" /> <p>This module provides a duplicate interface to 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. 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">thread</span> <span class="kn">as</span> <span class="nn">_thread</span> <span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span> <span class="kn">import</span> <span class="nn">dummy_thread</span> <span class="kn">as</span> <span class="nn">_thread</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="dummy_threading.html" title="previous chapter">16.4. <tt class="docutils literal"><span class="pre">dummy_threading</span></tt> — Drop-in replacement for the <tt class="docutils literal"><span class="pre">threading</span></tt> module</a></p> <h4>Next topic</h4> <p class="topless"><a href="multiprocessing.html" title="next chapter">16.6. <tt class="docutils literal"><span class="pre">multiprocessing</span></tt> — Process-based “threading” interface</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_thread.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="multiprocessing.html" title="16.6. multiprocessing — Process-based “threading” interface" >next</a> |</li> <li class="right" > <a href="dummy_threading.html" title="16.4. dummy_threading — Drop-in replacement for the threading module" >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. 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