arg.py 文件源码

def create_argparser():
    parser = argparse.ArgumentParser(
        parents=[base_parser] + tools.parsers(),
        add_help=False,
        formatter_class=argparse.RawDescriptionHelpFormatter,
    )

    group = parser.add_argument_group(
        'supported compiler/build-system commands')

    supported_commands = ', '.join(capture.supported_commands())
    group.add_argument(
        CMD_MARKER,
        metavar='<cmd>',
        dest='nullarg',
        default=None,
        help=('Command to run the compiler/build-system. '
              'Supported build commands: ' + supported_commands),
    )

    return parser