Method format_help

Lib/argparse.py:2786–2808

(self, formatter=None)

        return formatter.format_help()

    def format_help(self, formatter=None):
        if formatter is None:
            formatter = self._get_formatter()

        # usage
        formatter.add_usage(self.usage, self._actions,
                            self._mutually_exclusive_groups)

        # description
        formatter.add_text(self.description)

        # positionals, optionals and user-defined groups
        for action_group in self._action_groups:
            formatter.start_section(action_group.title)
            formatter.add_text(action_group.description)
            formatter.add_arguments(action_group._group_actions)
            formatter.end_section()

        # epilog
        formatter.add_text(self.epilog)

        # determine help from format above
        return formatter.format_help()

    def _get_formatter(self, file=None):
        formatter = self.formatter_class(prog=self.prog)