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('alex')
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