python3 使用静态属性节约对象实例的内存开销

# 如何减少大量实例占用内存的开销import sysclass Player:    def __init__(self, uid, name, status=0, level=1):        self.uid = uid        self.name = name        self.stat = status        self.level = levelclass Player2:    __slots__ = ['uid', 'name', 'stat', 'level']  # 用来描述实例的属性    def __init__(self, uid, name, status=0, level=1):        self.uid = uid        self.name = name        self.stat = status        self.level = levelif __name__ == '__main__':    p1 = Player('1010', 'Jim')    p2 = Player2('1010', 'Jim')    p1.x = 100  # Play1可以动态增加属性    # p2.x = 100 出现错误      print(sys.getsizeof(p1.__dict__))  # 用于动态绑定属性的内存开销    print(set(dir(p1)))    print(set(dir(p2)))    print(set(dir(p1)) - set(dir(p2)))