摘要: ```python class View: _instance = None def __new__(cls, *args, **kwargs): if cls._instance is None: cls._instance = super(View, cls).__new__(cls) return cls._ins... 阅读全文
posted @ 2017-10-11 12:44 sawyer_aquarius 阅读(94) 评论(0) 推荐(0) 编辑