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<title>10.25 distutils.cmd -- Abstract base class for Distutils commands
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<H1><A NAME=
"SECTION00102500000000000000000">
10.25 <tt class=
"module">distutils.cmd
</tt> -- Abstract base class for Distutils commands
</A>
<A NAME=
"module-distutils.cmd"></A>
This module supplies the abstract base class
<tt class=
"class">Command
</tt>.
<dl><dt><table cellpadding=
"0" cellspacing=
"0"><tr valign=
"baseline">
<td><nobr><b><span class=
"typelabel">class
</span> <tt id='l2h-
127' xml:id='l2h-
127'
class=
"class">Command
</tt></b>(
</nobr></td>
<td><var>dist
</var>)
</td></tr></table></dt>
Abstract base class for defining command classes, the ``worker bees''
of the Distutils. A useful analogy for command classes is to think of
them as subroutines with local variables called
<var>options
</var>. The
options are declared in
<tt class=
"method">initialize_options()
</tt> and defined
(given their final values) in
<tt class=
"method">finalize_options()
</tt>, both of
which must be defined by every command class. The distinction between
the two is necessary because option values might come from the outside
world (command line, config file, ...), and any options dependent on
other options must be computed after these outside influences have
been processed -- hence
<tt class=
"method">finalize_options()
</tt>. The body of the
subroutine, where it does all its work based on the values of its
options, is the
<tt class=
"method">run()
</tt> method, which must also be implemented
The class constructor takes a single argument
<var>dist
</var>, a
<tt class=
"class">Distribution
</tt> instance.
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<span class=
"release-info">Release
2.4.2, documentation updated on
28 September
2005.
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