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<H2><A NAME="SECTION006520000000000000000"> </A>
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4.5.2 Table Object (mp_table)<a name="l2h-40"> </a>
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<a name="l2h-43"> </a>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
<td><nobr><b><span class="typelabel">class</span> <a name="l2h-41"><tt class="class">table</tt></a></b>(</nobr></td>
<td><big>[</big><var>mapping-or-sequence</var><big>]</big>)</td></tr></table>
<dd>
Returns a new empty object of type <code>mp_table</code>. See Section
<A HREF="#pyapi-mptable">4.5.2</A> for description of the table object. The
<var>mapping-or-sequence</var> will be used to provide initial values for
the table.
<P>
The table object is a wrapper around the Apache APR table. The table
object behaves very much like a dictionary (including the Python 2.2
features such as support of the <code>in</code> operator, etc.), with the
following differences:
<P>
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<LI>Both keys and values must be strings.
</LI>
<LI>Key lookups are case-insensitive.
</LI>
<LI>Duplicate keys are allowed (see <tt class="method">add()</tt> below). When there is
more than one value for a key, a subscript operation returns a list.
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<P>
Much of the information that Apache uses is stored in tables. For
example, <tt class="member">req.headers_in</tt> and <tt class="member">req.headers_out</tt>.
<P>
All the tables that mod_python provides inside the request
object are actual mappings to the Apache structures, so changing the
Python table also changes the underlying Apache table.
<P>
In addition to normal dictionary-like behavior, the table object also
has the following method:
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<td><nobr><b><a name="l2h-42"><tt class="method">add</tt></a></b>(</nobr></td>
<td><var>key, val</var>)</td></tr></table>
<dd>
<tt class="function">add()</tt> allows for creating duplicate keys, which is useful
when multiple headers, such as <code>Set-Cookie:</code> are required.
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<span class="versionnote">New in version 3.0.</span>
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<span class="release-info">Release 3.2.10, documentation updated on July 19, 2006.</span>
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