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<H2><A NAME="SECTION007310000000000000000"></A><A NAME="attribute-references"></A>
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5.3.1 Attribute references
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<a id='l2h-364' xml:id='l2h-364'></a>
<P>
An attribute reference is a primary followed by a period and a name:

<P>
<dl><dd class="grammar">
<div class="productions">
<table>
<tr>
    <td><a id='tok-attributeref' xml:id='tok-attributeref'>attributeref</a></td>
    <td>::=</td>
    <td><a class='grammartoken' href="primaries.html#tok-primary">primary</a> "." <a class='grammartoken' href="identifiers.html#tok-identifier">identifier</a></td></tr>
</table>
</div>
<a class="grammar-footer"
  href="grammar.txt" type="text/plain"
  >Download entire grammar as text.</a>
</dd></dl>

<P>
The primary must evaluate to an object of a type that supports
attribute references, e.g., a module, list, or an instance.  This
object is then asked to produce the attribute whose name is the
identifier.  If this attribute is not available, the exception
<tt class="exception">AttributeError</tt><a id='l2h-365' xml:id='l2h-365'></a> is raised.
Otherwise, the type and value of the object produced is determined by
the object.  Multiple evaluations of the same attribute reference may
yield different objects.
<a id='l2h-366' xml:id='l2h-366'></a><a id='l2h-367' xml:id='l2h-367'></a>
<P>

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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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