Edit File: token.html
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Python Language Services</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="module-token"> <h1>31.5. <tt class="xref docutils literal"><span class="pre">token</span></tt> — Constants used with Python parse trees<a class="headerlink" href="#module-token" title="Permalink to this headline">¶</a></h1> <p>This module provides constants which represent the numeric values of leaf nodes of the parse tree (terminal tokens). Refer to the file <tt class="docutils literal"><span class="pre">Grammar/Grammar</span></tt> in the Python distribution for the definitions of the names in the context of the language grammar. The specific numeric values which the names map to may change between Python versions.</p> <p>This module also provides one data object and some functions. The functions mirror definitions in the Python C header files.</p> <dl class="data"> <dt id="token.tok_name"> <tt class="descclassname">token.</tt><tt class="descname">tok_name</tt><a class="headerlink" href="#token.tok_name" title="Permalink to this definition">¶</a></dt> <dd>Dictionary mapping the numeric values of the constants defined in this module back to name strings, allowing more human-readable representation of parse trees to be generated.</dd></dl> <dl class="function"> <dt id="token.ISTERMINAL"> <tt class="descclassname">token.</tt><tt class="descname">ISTERMINAL</tt><big>(</big><em>x</em><big>)</big><a class="headerlink" href="#token.ISTERMINAL" title="Permalink to this definition">¶</a></dt> <dd>Return true for terminal token values.</dd></dl> <dl class="function"> <dt id="token.ISNONTERMINAL"> <tt class="descclassname">token.</tt><tt class="descname">ISNONTERMINAL</tt><big>(</big><em>x</em><big>)</big><a class="headerlink" href="#token.ISNONTERMINAL" title="Permalink to this definition">¶</a></dt> <dd>Return true for non-terminal token values.</dd></dl> <dl class="function"> <dt id="token.ISEOF"> <tt class="descclassname">token.</tt><tt class="descname">ISEOF</tt><big>(</big><em>x</em><big>)</big><a class="headerlink" href="#token.ISEOF" title="Permalink to this definition">¶</a></dt> <dd>Return true if <em>x</em> is the marker indicating the end of input.</dd></dl> <div class="admonition-see-also admonition seealso"> <p class="first admonition-title">See also</p> <dl class="last docutils"> <dt>Module <a title="Access parse trees for Python source code." class="reference external" href="parser.html#module-parser"><tt class="xref docutils literal"><span class="pre">parser</span></tt></a></dt> <dd>The second example for the <a title="Access parse trees for Python source code." class="reference external" href="parser.html#module-parser"><tt class="xref docutils literal"><span class="pre">parser</span></tt></a> module shows how to use the <a title="Constants representing internal nodes of the parse tree." class="reference external" href="symbol.html#module-symbol"><tt class="xref docutils literal"><span class="pre">symbol</span></tt></a> module.</dd> </dl> </div> </div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="symbol.html" title="previous chapter">31.4. <tt class="docutils literal docutils literal docutils literal"><span class="pre">symbol</span></tt> — Constants used with Python parse trees</a></p> <h4>Next topic</h4> <p class="topless"><a href="keyword.html" title="next chapter">31.6. <tt class="docutils literal docutils literal"><span class="pre">keyword</span></tt> — Testing for Python keywords</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/token.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="keyword.html" title="31.6. keyword — Testing for Python keywords" >next</a> |</li> <li class="right" > <a href="symbol.html" title="31.4. symbol — Constants used with Python parse trees" >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="language.html" >31. 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