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<H1><A NAME="SECTION007200000000000000000"></A><A NAME="atoms"></A>
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5.2 Atoms
</H1>

<P>
Atoms are the most basic elements of expressions.  The simplest atoms
are identifiers or literals.  Forms enclosed in
reverse quotes or in parentheses, brackets or braces are also
categorized syntactically as atoms.  The syntax for atoms is:

<P>
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    <td><a id='tok-atom' xml:id='tok-atom'>atom</a></td>
    <td>::=</td>
    <td><a class='grammartoken' href="identifiers.html#tok-identifier">identifier</a> | <a class='grammartoken' href="atom-literals.html#tok-literal">literal</a> | <a class='grammartoken' href="atoms.html#tok-enclosure">enclosure</a></td></tr>
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    <td><code>| <a class='grammartoken' href="genexpr.html#tok-generator_expression">generator_expression</a> | <a class='grammartoken' href="dict.html#tok-dict_display">dict_display</a></code></td></tr>
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    <td></td>
    <td><code>| <a class='grammartoken' href="string-conversions.html#tok-string_conversion">string_conversion</a></code></td></tr>
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<a class="grammar-footer"
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<LI><A href="atom-identifiers.html">5.2.1 Identifiers (Names)</a>
<LI><A href="atom-literals.html">5.2.2 Literals</a>
<LI><A href="parenthesized.html">5.2.3 Parenthesized forms</a>
<LI><A href="lists.html">5.2.4 List displays</a>
<LI><A href="genexpr.html">5.2.5 Generator expressions</a>
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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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