反射

# 反射:
# hasattr() 判断一个对象里是否有对应的 name_str 字符串的方法
# getattr() 根据字符串获得对象里的对应的方法的内存地址  后面+()可调用
# setattr(obj, 'name', value) 通过字符串设置一个值
# delattr(obj, "str")
def eat(self):
    print("eat")

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

    def talk(self, who):
        print("%s is talking wangwangwnag with %s!"% (self.name, who))

d = Dog("L", 11)
action = input("action:>>").strip()

if hasattr(d, action):
    func = getattr(d, action)
    func("Jy")
    print(d.name)
    delattr(d, 'name')
else:
    setattr(d, action, eat)
    func = getattr(d, action)
    func(d)
print(d.name)