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  • Committer: Dave Kuhlman
  • Date: 2017-04-15 16:24:56 UTC
  • Revision ID: dkuhlman@davekuhlman.org-20170415162456-iav9vozzg4iwqwv3
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python-2.7.11-docs-html/library/symbol.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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  <head>
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    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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    <title>32.4. symbol — Constants used with Python parse trees &mdash; Python 2.7.11 documentation</title>
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    <link rel="stylesheet" href="../_static/classic.css" type="text/css" />
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    <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
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    <script type="text/javascript">
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      var DOCUMENTATION_OPTIONS = {
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        URL_ROOT:    '../',
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        VERSION:     '2.7.11',
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        COLLAPSE_INDEX: false,
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        FILE_SUFFIX: '.html',
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        HAS_SOURCE:  true
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      };
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    </script>
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          title="Search within Python 2.7.11 documentation"
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          href="../_static/opensearch.xml"/>
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    <link rel="author" title="About these documents" href="../about.html" />
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    <link rel="top" title="Python 2.7.11 documentation" href="../contents.html" />
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    <link rel="up" title="32. Python Language Services" href="language.html" />
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    <link rel="next" title="32.5. token — Constants used with Python parse trees" href="token.html" />
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    <link rel="prev" title="32.3. symtable — Access to the compiler’s symbol tables" href="symtable.html" />
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             accesskey="I">index</a></li>
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             >modules</a> |</li>
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          <a href="token.html" title="32.5. token — Constants used with Python parse trees"
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          <a href="symtable.html" title="32.3. symtable — Access to the compiler’s symbol tables"
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  <div class="section" id="module-symbol">
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<span id="symbol-constants-used-with-python-parse-trees"></span><h1>32.4. <a class="reference internal" href="#module-symbol" title="symbol: Constants representing internal nodes of the parse tree."><code class="xref py py-mod docutils literal"><span class="pre">symbol</span></code></a> &#8212; Constants used with Python parse trees<a class="headerlink" href="#module-symbol" title="Permalink to this headline">¶</a></h1>
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<p><strong>Source code:</strong> <a class="reference external" href="https://hg.python.org/cpython/file/2.7/Lib/symbol.py">Lib/symbol.py</a></p>
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<hr class="docutils" />
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<p>This module provides constants which represent the numeric values of internal
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nodes of the parse tree.  Unlike most Python constants, these use lower-case
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names.  Refer to the file <code class="file docutils literal"><span class="pre">Grammar/Grammar</span></code> in the Python distribution for
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the definitions of the names in the context of the language grammar.  The
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specific numeric values which the names map to may change between Python
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versions.</p>
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<p>This module also provides one additional data object:</p>
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<dl class="data">
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<dt id="symbol.sym_name">
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<code class="descclassname">symbol.</code><code class="descname">sym_name</code><a class="headerlink" href="#symbol.sym_name" title="Permalink to this definition">¶</a></dt>
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<dd><p>Dictionary mapping the numeric values of the constants defined in this module
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back to name strings, allowing more human-readable representation of parse trees
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to be generated.</p>
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</dd></dl>
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</div>
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                        title="previous chapter">32.3. <code class="docutils literal"><span class="pre">symtable</span></code> &#8212; Access to the compiler&#8217;s symbol tables</a></p>
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  <p class="topless"><a href="token.html"
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                        title="next chapter">32.5. <code class="docutils literal"><span class="pre">token</span></code> &#8212; Constants used with Python parse trees</a></p>
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          <a href="token.html" title="32.5. token — Constants used with Python parse trees"
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             >previous</a> |</li>
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    &copy; <a href="../copyright.html">Copyright</a> 1990-2016, Python Software Foundation.
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