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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_defaults(self):
 """Use argparse to determine and return dict of defaults."""

        # dont need 'required' to determine the default
        options = [copy.copy(opt) for opt in self._options]
        for opt in options:
            try:
                del opt.kwargs['required']
            except KeyError:
                pass
        parser = self.build_parser(options, permissive=True, add_help=False)
        parsed, _ = parser.parse_known_args([])
        return vars(parsed)