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54<H2><A NAME="SECTION0082150000000000000000"></A><A NAME="optparse-extending-optparse"></A>
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566.21.5 Extending <tt class="module">optparse</tt>
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60Since the two major controlling factors in how <tt class="module">optparse</tt> interprets
61command-line options are the action and type of each option, the most
62likely direction of extension is to add new actions and new types.
63
64<P>
65Also, the <code>examples/</code> directory of the source distribution includes
66several demonstrations of extending <tt class="module">optparse</tt> in different ways: e.g. a
67case-insensitive option parser, or two kinds of option parsers that
68implement ``required options''.
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