<!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>32.5. token — Constants used with Python parse trees — Python 3.5.3 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">
var DOCUMENTATION_OPTIONS = {
URL_ROOT: '../',
VERSION: '3.5.3',
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 3.5.3 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 3.5.3 documentation" href="../contents.html" />
<link rel="up" title="32. Python Language Services" href="language.html" />
<link rel="next" title="32.6. keyword — Testing for Python keywords" href="keyword.html" />
<link rel="prev" title="32.4. symbol — Constants used with Python parse trees" href="symbol.html" />
<link rel="shortcut icon" type="image/png" href="../_static/py.png" />
<script type="text/javascript" src="../_static/copybutton.js"></script>
<script type="text/javascript" src="../_static/version_switch.js"></script>
</head>
<body role="document">
<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="keyword.html" title="32.6. keyword — Testing for Python keywords"
accesskey="N">next</a> |</li>
<li class="right" >
<a href="symbol.html" title="32.4. symbol — Constants used with Python parse trees"
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="version_switcher_placeholder">3.5.3</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="nav-item nav-item-2"><a href="language.html" accesskey="U">32. Python Language Services</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="module-token">
<span id="token-constants-used-with-python-parse-trees"></span><h1>32.5. <a class="reference internal" href="#module-token" title="token: Constants representing terminal nodes of the parse tree."><code class="xref py py-mod docutils literal"><span class="pre">token</span></code></a> — Constants used with Python parse trees<a class="headerlink" href="#module-token" title="Permalink to this headline">¶</a></h1>
<p><strong>Source code:</strong> <a class="reference external" href="https://hg.python.org/cpython/file/3.5/Lib/token.py">Lib/token.py</a></p>
<hr class="docutils" />
<p>This module provides constants which represent the numeric values of leaf nodes
of the parse tree (terminal tokens). Refer to the file <code class="file docutils literal"><span class="pre">Grammar/Grammar</span></code>
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>The module also provides a mapping from numeric codes to names and some
functions. The functions mirror definitions in the Python C header files.</p>
<dl class="data">
<dt id="token.tok_name">
<code class="descclassname">token.</code><code class="descname">tok_name</code><a class="headerlink" href="#token.tok_name" title="Permalink to this definition">¶</a></dt>
<dd><p>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.</p>
</dd></dl>
<dl class="function">
<dt id="token.ISTERMINAL">
<code class="descclassname">token.</code><code class="descname">ISTERMINAL</code><span class="sig-paren">(</span><em>x</em><span class="sig-paren">)</span><a class="headerlink" href="#token.ISTERMINAL" title="Permalink to this definition">¶</a></dt>
<dd><p>Return true for terminal token values.</p>
</dd></dl>
<dl class="function">
<dt id="token.ISNONTERMINAL">
<code class="descclassname">token.</code><code class="descname">ISNONTERMINAL</code><span class="sig-paren">(</span><em>x</em><span class="sig-paren">)</span><a class="headerlink" href="#token.ISNONTERMINAL" title="Permalink to this definition">¶</a></dt>
<dd><p>Return true for non-terminal token values.</p>
</dd></dl>
<dl class="function">
<dt id="token.ISEOF">
<code class="descclassname">token.</code><code class="descname">ISEOF</code><span class="sig-paren">(</span><em>x</em><span class="sig-paren">)</span><a class="headerlink" href="#token.ISEOF" title="Permalink to this definition">¶</a></dt>
<dd><p>Return true if <em>x</em> is the marker indicating the end of input.</p>
</dd></dl>
<p>The token constants are:</p>
<dl class="data">
<dt id="token.ENDMARKER">
<code class="descclassname">token.</code><code class="descname">ENDMARKER</code><a class="headerlink" href="#token.ENDMARKER" title="Permalink to this definition">¶</a></dt>
<dt id="token.NAME">
<code class="descclassname">token.</code><code class="descname">NAME</code><a class="headerlink" href="#token.NAME" title="Permalink to this definition">¶</a></dt>
<dt id="token.NUMBER">
<code class="descclassname">token.</code><code class="descname">NUMBER</code><a class="headerlink" href="#token.NUMBER" title="Permalink to this definition">¶</a></dt>
<dt id="token.STRING">
<code class="descclassname">token.</code><code class="descname">STRING</code><a class="headerlink" href="#token.STRING" title="Permalink to this definition">¶</a></dt>
<dt id="token.NEWLINE">
<code class="descclassname">token.</code><code class="descname">NEWLINE</code><a class="headerlink" href="#token.NEWLINE" title="Permalink to this definition">¶</a></dt>
<dt id="token.INDENT">
<code class="descclassname">token.</code><code class="descname">INDENT</code><a class="headerlink" href="#token.INDENT" title="Permalink to this definition">¶</a></dt>
<dt id="token.DEDENT">
<code class="descclassname">token.</code><code class="descname">DEDENT</code><a class="headerlink" href="#token.DEDENT" title="Permalink to this definition">¶</a></dt>
<dt id="token.LPAR">
<code class="descclassname">token.</code><code class="descname">LPAR</code><a class="headerlink" href="#token.LPAR" title="Permalink to this definition">¶</a></dt>
<dt id="token.RPAR">
<code class="descclassname">token.</code><code class="descname">RPAR</code><a class="headerlink" href="#token.RPAR" title="Permalink to this definition">¶</a></dt>
<dt id="token.LSQB">
<code class="descclassname">token.</code><code class="descname">LSQB</code><a class="headerlink" href="#token.LSQB" title="Permalink to this definition">¶</a></dt>
<dt id="token.RSQB">
<code class="descclassname">token.</code><code class="descname">RSQB</code><a class="headerlink" href="#token.RSQB" title="Permalink to this definition">¶</a></dt>
<dt id="token.COLON">
<code class="descclassname">token.</code><code class="descname">COLON</code><a class="headerlink" href="#token.COLON" title="Permalink to this definition">¶</a></dt>
<dt id="token.COMMA">
<code class="descclassname">token.</code><code class="descname">COMMA</code><a class="headerlink" href="#token.COMMA" title="Permalink to this definition">¶</a></dt>
<dt id="token.SEMI">
<code class="descclassname">token.</code><code class="descname">SEMI</code><a class="headerlink" href="#token.SEMI" title="Permalink to this definition">¶</a></dt>
<dt id="token.PLUS">
<code class="descclassname">token.</code><code class="descname">PLUS</code><a class="headerlink" href="#token.PLUS" title="Permalink to this definition">¶</a></dt>
<dt id="token.MINUS">
<code class="descclassname">token.</code><code class="descname">MINUS</code><a class="headerlink" href="#token.MINUS" title="Permalink to this definition">¶</a></dt>
<dt id="token.STAR">
<code class="descclassname">token.</code><code class="descname">STAR</code><a class="headerlink" href="#token.STAR" title="Permalink to this definition">¶</a></dt>
<dt id="token.SLASH">
<code class="descclassname">token.</code><code class="descname">SLASH</code><a class="headerlink" href="#token.SLASH" title="Permalink to this definition">¶</a></dt>
<dt id="token.VBAR">
<code class="descclassname">token.</code><code class="descname">VBAR</code><a class="headerlink" href="#token.VBAR" title="Permalink to this definition">¶</a></dt>
<dt id="token.AMPER">
<code class="descclassname">token.</code><code class="descname">AMPER</code><a class="headerlink" href="#token.AMPER" title="Permalink to this definition">¶</a></dt>
<dt id="token.LESS">
<code class="descclassname">token.</code><code class="descname">LESS</code><a class="headerlink" href="#token.LESS" title="Permalink to this definition">¶</a></dt>
<dt id="token.GREATER">
<code class="descclassname">token.</code><code class="descname">GREATER</code><a class="headerlink" href="#token.GREATER" title="Permalink to this definition">¶</a></dt>
<dt id="token.EQUAL">
<code class="descclassname">token.</code><code class="descname">EQUAL</code><a class="headerlink" href="#token.EQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.DOT">
<code class="descclassname">token.</code><code class="descname">DOT</code><a class="headerlink" href="#token.DOT" title="Permalink to this definition">¶</a></dt>
<dt id="token.PERCENT">
<code class="descclassname">token.</code><code class="descname">PERCENT</code><a class="headerlink" href="#token.PERCENT" title="Permalink to this definition">¶</a></dt>
<dt id="token.LBRACE">
<code class="descclassname">token.</code><code class="descname">LBRACE</code><a class="headerlink" href="#token.LBRACE" title="Permalink to this definition">¶</a></dt>
<dt id="token.RBRACE">
<code class="descclassname">token.</code><code class="descname">RBRACE</code><a class="headerlink" href="#token.RBRACE" title="Permalink to this definition">¶</a></dt>
<dt id="token.EQEQUAL">
<code class="descclassname">token.</code><code class="descname">EQEQUAL</code><a class="headerlink" href="#token.EQEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.NOTEQUAL">
<code class="descclassname">token.</code><code class="descname">NOTEQUAL</code><a class="headerlink" href="#token.NOTEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.LESSEQUAL">
<code class="descclassname">token.</code><code class="descname">LESSEQUAL</code><a class="headerlink" href="#token.LESSEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.GREATEREQUAL">
<code class="descclassname">token.</code><code class="descname">GREATEREQUAL</code><a class="headerlink" href="#token.GREATEREQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.TILDE">
<code class="descclassname">token.</code><code class="descname">TILDE</code><a class="headerlink" href="#token.TILDE" title="Permalink to this definition">¶</a></dt>
<dt id="token.CIRCUMFLEX">
<code class="descclassname">token.</code><code class="descname">CIRCUMFLEX</code><a class="headerlink" href="#token.CIRCUMFLEX" title="Permalink to this definition">¶</a></dt>
<dt id="token.LEFTSHIFT">
<code class="descclassname">token.</code><code class="descname">LEFTSHIFT</code><a class="headerlink" href="#token.LEFTSHIFT" title="Permalink to this definition">¶</a></dt>
<dt id="token.RIGHTSHIFT">
<code class="descclassname">token.</code><code class="descname">RIGHTSHIFT</code><a class="headerlink" href="#token.RIGHTSHIFT" title="Permalink to this definition">¶</a></dt>
<dt id="token.DOUBLESTAR">
<code class="descclassname">token.</code><code class="descname">DOUBLESTAR</code><a class="headerlink" href="#token.DOUBLESTAR" title="Permalink to this definition">¶</a></dt>
<dt id="token.PLUSEQUAL">
<code class="descclassname">token.</code><code class="descname">PLUSEQUAL</code><a class="headerlink" href="#token.PLUSEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.MINEQUAL">
<code class="descclassname">token.</code><code class="descname">MINEQUAL</code><a class="headerlink" href="#token.MINEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.STAREQUAL">
<code class="descclassname">token.</code><code class="descname">STAREQUAL</code><a class="headerlink" href="#token.STAREQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.SLASHEQUAL">
<code class="descclassname">token.</code><code class="descname">SLASHEQUAL</code><a class="headerlink" href="#token.SLASHEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.PERCENTEQUAL">
<code class="descclassname">token.</code><code class="descname">PERCENTEQUAL</code><a class="headerlink" href="#token.PERCENTEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.AMPEREQUAL">
<code class="descclassname">token.</code><code class="descname">AMPEREQUAL</code><a class="headerlink" href="#token.AMPEREQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.VBAREQUAL">
<code class="descclassname">token.</code><code class="descname">VBAREQUAL</code><a class="headerlink" href="#token.VBAREQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.CIRCUMFLEXEQUAL">
<code class="descclassname">token.</code><code class="descname">CIRCUMFLEXEQUAL</code><a class="headerlink" href="#token.CIRCUMFLEXEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.LEFTSHIFTEQUAL">
<code class="descclassname">token.</code><code class="descname">LEFTSHIFTEQUAL</code><a class="headerlink" href="#token.LEFTSHIFTEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.RIGHTSHIFTEQUAL">
<code class="descclassname">token.</code><code class="descname">RIGHTSHIFTEQUAL</code><a class="headerlink" href="#token.RIGHTSHIFTEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.DOUBLESTAREQUAL">
<code class="descclassname">token.</code><code class="descname">DOUBLESTAREQUAL</code><a class="headerlink" href="#token.DOUBLESTAREQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.DOUBLESLASH">
<code class="descclassname">token.</code><code class="descname">DOUBLESLASH</code><a class="headerlink" href="#token.DOUBLESLASH" title="Permalink to this definition">¶</a></dt>
<dt id="token.DOUBLESLASHEQUAL">
<code class="descclassname">token.</code><code class="descname">DOUBLESLASHEQUAL</code><a class="headerlink" href="#token.DOUBLESLASHEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.AT">
<code class="descclassname">token.</code><code class="descname">AT</code><a class="headerlink" href="#token.AT" title="Permalink to this definition">¶</a></dt>
<dt id="token.ATEQUAL">
<code class="descclassname">token.</code><code class="descname">ATEQUAL</code><a class="headerlink" href="#token.ATEQUAL" title="Permalink to this definition">¶</a></dt>
<dt id="token.RARROW">
<code class="descclassname">token.</code><code class="descname">RARROW</code><a class="headerlink" href="#token.RARROW" title="Permalink to this definition">¶</a></dt>
<dt id="token.ELLIPSIS">
<code class="descclassname">token.</code><code class="descname">ELLIPSIS</code><a class="headerlink" href="#token.ELLIPSIS" title="Permalink to this definition">¶</a></dt>
<dt id="token.OP">
<code class="descclassname">token.</code><code class="descname">OP</code><a class="headerlink" href="#token.OP" title="Permalink to this definition">¶</a></dt>
<dt id="token.AWAIT">
<code class="descclassname">token.</code><code class="descname">AWAIT</code><a class="headerlink" href="#token.AWAIT" title="Permalink to this definition">¶</a></dt>
<dt id="token.ASYNC">
<code class="descclassname">token.</code><code class="descname">ASYNC</code><a class="headerlink" href="#token.ASYNC" title="Permalink to this definition">¶</a></dt>
<dt id="token.ERRORTOKEN">
<code class="descclassname">token.</code><code class="descname">ERRORTOKEN</code><a class="headerlink" href="#token.ERRORTOKEN" title="Permalink to this definition">¶</a></dt>
<dt id="token.N_TOKENS">
<code class="descclassname">token.</code><code class="descname">N_TOKENS</code><a class="headerlink" href="#token.N_TOKENS" title="Permalink to this definition">¶</a></dt>
<dt id="token.NT_OFFSET">
<code class="descclassname">token.</code><code class="descname">NT_OFFSET</code><a class="headerlink" href="#token.NT_OFFSET" title="Permalink to this definition">¶</a></dt>
<dd><div class="versionchanged">
<p><span class="versionmodified">Changed in version 3.5: </span>Added <a class="reference internal" href="#token.AWAIT" title="token.AWAIT"><code class="xref py py-data docutils literal"><span class="pre">AWAIT</span></code></a> and <a class="reference internal" href="#token.ASYNC" title="token.ASYNC"><code class="xref py py-data docutils literal"><span class="pre">ASYNC</span></code></a> tokens. Starting with
Python 3.7, “async” and “await” will be tokenized as <a class="reference internal" href="#token.NAME" title="token.NAME"><code class="xref py py-data docutils literal"><span class="pre">NAME</span></code></a>
tokens, and <a class="reference internal" href="#token.AWAIT" title="token.AWAIT"><code class="xref py py-data docutils literal"><span class="pre">AWAIT</span></code></a> and <a class="reference internal" href="#token.ASYNC" title="token.ASYNC"><code class="xref py py-data docutils literal"><span class="pre">ASYNC</span></code></a> will be removed.</p>
</div>
</dd></dl>
</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="symbol.html"
title="previous chapter">32.4. <code class="docutils literal"><span class="pre">symbol</span></code> — Constants used with Python parse trees</a></p>
<h4>Next topic</h4>
<p class="topless"><a href="keyword.html"
title="next chapter">32.6. <code class="docutils literal"><span class="pre">keyword</span></code> — Testing for Python keywords</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="../_sources/library/token.txt"
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="keyword.html" title="32.6. keyword — Testing for Python keywords"
>next</a> |</li>
<li class="right" >
<a href="symbol.html" title="32.4. 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="https://www.python.org/">Python</a> »</li>
<li>
<span class="version_switcher_placeholder">3.5.3</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="nav-item nav-item-2"><a href="language.html" >32. Python Language Services</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> 2001-2017, 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 Jan 20, 2017.
<a href="../bugs.html">Found a bug</a>?
<br />
Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.3.3.
</div>
</body>
</html>
