enum.py 文件源码

def convert(cls: Enum, ctx: 'DogbotContext', arg: str):
        try:
            if arg not in [e.name for e in cls]:
                return cls[arg.upper()]
            else:
                return cls[arg]
        except KeyError:
            # value in enum not found

            valid_keys = ', '.join('`{}`'.format(num.name.lower()) for num in list(cls))
            raise commands.BadArgument('Invalid type. Valid types: {}'.format(valid_keys))