[issue21481] Argpase Namespace object methods __eq__ and __ne__ raise TypeError when comparing to None

[Roundup Robot]

Roundup Robot added the comment:

New changeset 510c8dc38749 by Raymond Hettinger in branch '3.4':
Issue #21481:  Teach argparse equality tests to return NotImplemented when comparing to unknown types.
http://hg.python.org/cpython/rev/510c8dc38749

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