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<H2><A NAME="SECTION006530000000000000000"></A><A NAME="pyapi-mptable"></A>
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4.5.3 Table Object (mp_table)<a id='l2h-43' xml:id='l2h-43'></a>
</H2>
<P>
<a id='l2h-46' xml:id='l2h-46'></a>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
<td><nobr><b><span class="typelabel">class</span> <tt id='l2h-44' xml:id='l2h-44' class="class">table</tt></b>(</nobr></td>
<td><var></var><big>[</big><var>mapping-or-sequence</var><big>]</big><var></var>)</td></tr></table></dt>
<dd>
Returns a new empty object of type <code>mp_table</code>. See Section
<A HREF="#pyapi-mptable">4.5.3</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>
<UL>
<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.
</LI>
</UL>
<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:
<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
<td><nobr><b><tt id='l2h-45' xml:id='l2h-45' class="method">add</tt></b>(</nobr></td>
<td><var>key, val</var>)</td></tr></table></dt>
<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 3.3.1, documentation updated on January 29, 2007.</span>
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