[issue42572] Better path handling with argparse

[paul j3]

paul j3 <ajipanca at gmail.com> added the comment:

One caution - the type parameter is a callable (function) that takes one string as argument.  I proposed `pathlib.Path` because it does that, returning a Path object.  It's a class instance creator.  I believe the module has other class initiators.

bool() has confused many users.  While it returns a bool class instance, True or False, the only string that returns False is the empty one, with argparse can't supply. It does not convert strings like 'False' or 'no' to boolean False.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42572>
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