class Chinese:
    country='China'
    def __init__(self,name): self.name=name def play_ball(self,ball): print('%s 正在打 %s' %(self.name,ball)) p1=Chinese('simon') print(p1.__dict__) #查看 # print(p1.name) # print(p1.play_ball) #增加 p1.age=18 print(p1.__dict__) print(p1.age) #不要修改底层的属性字典 # p1.__dict__['sex']='male' # print(p1.__dict__) # print(p1.sex) #修改 p1.age=19 print(p1.__dict__) print(p1.age) #删除 del p1.age print(p1.__dict__)