base.py 文件源码

def create_parser(self, prog_name, subcommand):  # noqa
        """
        Create and return the ``ArgumentParser`` which will be used to
        parse the arguments to this command.
        """
        parser = CommandParser(
            self, prog="%s %s" % (os.path.basename(prog_name), subcommand),
            description=self.help or None)
        parser.add_argument(
            '--traceback', action='store_true',
            help=SUPPRESS)
        if self.args:
            # Keep compatibility and always accept positional arguments,
            # like optparse when args is set
            parser.add_argument('args', nargs='*')
        self.add_arguments(parser)
        argcomplete.autocomplete(parser)

        return parser