Edit File: getpass.html
<!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>15.7. getpass — Portable password input — Python v2.6.6 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: '2.6.6', 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 v2.6.6 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 v2.6.6 documentation" href="../index.html" /> <link rel="up" title="15. 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Generic Operating System Services</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="module-getpass"> <h1>15.7. <tt class="xref docutils literal"><span class="pre">getpass</span></tt> — Portable password input<a class="headerlink" href="#module-getpass" title="Permalink to this headline">¶</a></h1> <p>The <tt class="xref docutils literal"><span class="pre">getpass</span></tt> module provides two functions:</p> <dl class="function"> <dt id="getpass.getpass"> <tt class="descclassname">getpass.</tt><tt class="descname">getpass</tt><big>(</big><span class="optional">[</span><em>prompt</em><span class="optional">[</span>, <em>stream</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#getpass.getpass" title="Permalink to this definition">¶</a></dt> <dd><p>Prompt the user for a password without echoing. The user is prompted using the string <em>prompt</em>, which defaults to <tt class="docutils literal"><span class="pre">'Password:</span> <span class="pre">'</span></tt>. On Unix, the prompt is written to the file-like object <em>stream</em>. <em>stream</em> defaults to the controlling terminal (/dev/tty) or if that is unavailable to <tt class="docutils literal"><span class="pre">sys.stderr</span></tt> (this argument is ignored on Windows).</p> <p>If echo free input is unavailable getpass() falls back to printing a warning message to <em>stream</em> and reading from <tt class="docutils literal"><span class="pre">sys.stdin</span></tt> and issuing a <a title="getpass.GetPassWarning" class="reference internal" href="#getpass.GetPassWarning"><tt class="xref docutils literal"><span class="pre">GetPassWarning</span></tt></a>.</p> <p>Availability: Macintosh, Unix, Windows.</p> <p class="versionchanged"> <span class="versionmodified">Changed in version 2.5: </span>The <em>stream</em> parameter was added.</p> <p class="versionchanged"> <span class="versionmodified">Changed in version 2.6: </span>On Unix it defaults to using /dev/tty before falling back to <tt class="docutils literal"><span class="pre">sys.stdin</span></tt> and <tt class="docutils literal"><span class="pre">sys.stderr</span></tt>.</p> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">If you call getpass from within IDLE, the input may be done in the terminal you launched IDLE from rather than the idle window itself.</p> </div> </dd></dl> <dl class="exception"> <dt id="getpass.GetPassWarning"> <em class="property">exception </em><tt class="descclassname">getpass.</tt><tt class="descname">GetPassWarning</tt><a class="headerlink" href="#getpass.GetPassWarning" title="Permalink to this definition">¶</a></dt> <dd>A <a title="exceptions.UserWarning" class="reference external" href="exceptions.html#exceptions.UserWarning"><tt class="xref docutils literal"><span class="pre">UserWarning</span></tt></a> subclass issued when password input may be echoed.</dd></dl> <dl class="function"> <dt id="getpass.getuser"> <tt class="descclassname">getpass.</tt><tt class="descname">getuser</tt><big>(</big><big>)</big><a class="headerlink" href="#getpass.getuser" title="Permalink to this definition">¶</a></dt> <dd><p>Return the “login name” of the user. Availability: Unix, Windows.</p> <p>This function checks the environment variables <span class="target" id="index-355"></span><strong class="xref">LOGNAME</strong>, <span class="target" id="index-356"></span><strong class="xref">USER</strong>, <span class="target" id="index-357"></span><strong class="xref">LNAME</strong> and <span class="target" id="index-358"></span><strong class="xref">USERNAME</strong>, in order, and returns the value of the first one which is set to a non-empty string. If none are set, the login name from the password database is returned on systems which support the <a title="(Unix) The password database (getpwnam() and friends)." class="reference external" href="pwd.html#module-pwd"><tt class="xref docutils literal"><span class="pre">pwd</span></tt></a> module, otherwise, an exception is raised.</p> </dd></dl> </div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="logging.html" title="previous chapter">15.6. <tt class="docutils literal docutils literal"><span class="pre">logging</span></tt> — Logging facility for Python</a></p> <h4>Next topic</h4> <p class="topless"><a href="curses.html" title="next chapter">15.8. <tt class="docutils literal docutils literal docutils literal"><span class="pre">curses</span></tt> — Terminal handling for character-cell displays</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/getpass.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="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="../modindex.html" title="Global Module Index" >modules</a> |</li> <li class="right" > <a href="curses.html" title="15.8. curses — Terminal handling for character-cell displays" >next</a> |</li> <li class="right" > <a href="logging.html" title="15.6. logging — Logging facility for Python" >previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="../index.html">Python v2.6.6 documentation</a> »</li> <li><a href="index.html" >The Python Standard Library</a> »</li> <li><a href="allos.html" >15. 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