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Any chance this issue could be reopened? I ran across this bit of code today when working on coverage for argparse. I'd like to again propose the removal or modification of _get_args. I understand that it's there primarily to be overridden, but even that's not useful. Because _get_kwargs uses obj.__dict__.items(), overriding _get_args to return an iterable of positional args results in those arguments being output twice when repr() is called (once formatted as a positional arg and once formatted as a keyword arg). You end up with strings like the below. I just can't think of any situation where this behavior would be desirable.
Action(['--foo', '-a', '-b'], 'b', option_strings=['--foo', '-a', '-b'], dest='b', nargs='+', const=None, default=42, type='int', choices=[1, 2, 3], help='HELP', metavar='METAVAR')