_argparse_wrapper.py 文件源码

def _add_log_level_argument_group(self):
        dest = "log_level"

        group = self.parser.add_mutually_exclusive_group()
        group.add_argument(
            "--debug", dest=dest, action="store_const",
            const=logbook.DEBUG, default=logbook.INFO,
            help="for debug print.")
        group.add_argument(
            "--quiet", dest=dest, action="store_const",
            const=logbook.NOTSET, default=logbook.INFO,
            help="suppress execution log messages.")

        return group