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<div class="section" id="module-symbol">
<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 notranslate"><span class="pre">symbol</span></code></a> — Constants used with Python parse trees<a class="headerlink" href="#module-symbol" title="Permalink to this headline">¶</a></h1>
<p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/2.7/Lib/symbol.py">Lib/symbol.py</a></p>
<hr class="docutils" />
<p>This module provides constants which represent the numeric values of internal
nodes of the parse tree. Unlike most Python constants, these use lower-case
names. Refer to the file <code class="file docutils literal notranslate"><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>This module also provides one additional data object:</p>
<dl class="data">
<dt id="symbol.sym_name">
<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>
<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>
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