摘要:
'''#使用场景:想让p1和p2......的内存空间地址是一个。class Person(object): instance = None def __new__(cls, *args, **kwargs): print("__new__方法执行") if not cls.instance: cl 阅读全文
摘要:
'''#hasattr()判断真假布尔值True Faster#delattr()删除#setattr()新增#getattr()#查看class Person(object): def __init__(self, name, age, gender): self.name = name self 阅读全文