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<title>6.21.2.1 Understanding option actions
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<H3><A NAME=
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6.21.2.1 Understanding option actions
Actions tell
<tt class=
"module">optparse
</tt> what to do when it encounters an option on the
command line. There is a fixed set of actions hard-coded into
<tt class=
"module">optparse
</tt>;
adding new actions is an advanced topic covered in section
<A HREF=
"#optparse-extending"><tex2html_cross_ref_visible_mark></A>, Extending
<tt class=
"module">optparse
</tt>.
Most actions tell
<tt class=
"module">optparse
</tt> to store a value in some variable--for
example, take a string from the command line and store it in an
attribute of
<code>options
</code>.
If you don't specify an option action,
<tt class=
"module">optparse
</tt> defaults to
<code>store
</code>.
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<span class=
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