class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def haha(self):
        print("哈哈")

p = Person("alex", 28)

if hasattr(p, "haha"):   # attribute 判断xxx模块(对象) 是否有xxx属性
    fn = getattr(p, "haha")  # 从xxx对象中获取xxx属性
    if callable(fn):  # 判断是否可以被调用  + ()
        fn()  # 哈哈

# delattr(p, "name")  # 删除xxx模块(对象)中的xxx属性
# print(p.name)

p2 = Person("wusir", 22)
print(p2.name)  # wusir

setattr(p, "address", "北京市八大胡同")  # 给xxx模块(对象)设置xxx属性,值为xxx
setattr(p, "name", "胡辣汤")

print(p.address)  # 北京市八大胡同
print(p.name)  # 胡辣汤

setattr(p, "chi", lambda : print("我要吃"))
p.chi()  # 我要吃

setattr(Person, "chi", lambda : print("我要吃"))
p.chi()  # 我要吃