[issue14940] Usage documentation for pysetup

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

See my reply on #14939. We need to start getting command line usage information *out* of the standard library reference and documenting it here.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14940>
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