How to use 'python argparse help' in Python

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1152def print_help(self, file=None):
1153 """
1154 Print a help message, including the program usage and information about the
1155 arguments registered with the :class:`ArgumentParser`. If *file* is
1156 ``None``, :data:`sys.stdout` is assumed.
1158 There are also variants of these methods that simply return a string instead of
1159 printing it:
1161 """
1162 pass
78def format_help(self):
79 return _colorize(super(ExtArgumentParser, self).format_help() + '\n\n')

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