[issue9652] Tidy argparse default output

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

2.7 is closed to new features and I cannot see making a non-bug change in a maintenance release that could break something.

Should this be closed in favor of #9694? (Or vice versa?). Perhaps one of the issues should be renamed something like "Improve argparse message customization".

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nosy: +terry.reedy
stage:  -> unit test needed
versions: +Python 3.2 -Python 2.7

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