python对象中使用重写__repr__() 方法可以实现

class Item():
    url = ''
    title = ''
    summary = ''
    category = ''
    content = ''
    pan = ''
    publish_time = ''
    thumbnail = ''

    def __repr__(self) -> str:
        return '\n'.join(['%s:%s' % item for item in self.__dict__.items()])