parsers.py 文件源码

def _get_help_string(self, action):
        help = action.help
        if '(default' not in help and type(action) not in (argparse._StoreConstAction, argparse._StoreTrueAction, argparse._StoreFalseAction):
            if action.default is not argparse.SUPPRESS:
                defaulting_nargs = [argparse.OPTIONAL, argparse.ZERO_OR_MORE]
                if action.option_strings or action.nargs in defaulting_nargs:
                    help += ' (default: %(default)s)'
        return help