data.py 文件源码

def union(*classes):
    class Union(commands.Converter):
        async def convert(self, ctx, argument):
            for cls in classes:
                try:
                    if cls in converters:
                        cls = converters[cls]
                    return await cls.convert(self, ctx, argument)
                except Exception as e:
                    pass
            else:
                raise e

    return Union