《从零玩转python+人工智能-3》网易云课堂王顺子

#1.145——152节课25章——面向对象三大特性小案例

class Animal:
    def __init__(self,name,age=1):
        self.name = name
        self.age = age

    def eat(self):
        print("%s在吃饭" % self)

    def play(self):
        print("%s在玩" % self)

    def sleep(self):
        print("%s在睡觉" % self)
class Person(Animal):
    def __init__(self,name,pets,age):
        super(Person,self).__init__(name,age)
        self.pets = pets

    def yang_pets(self):
        for pet in self.pets:
            pet.eat()
            pet.play()
            pet.sleep()
    def make_pets_work(self):
        for pet in self.pets:
            # if isinstance(pet,Dog):
            #     pet.watch()
            # elif isinstance(pet,Cat):
            #     pet.catch()
            pet.work()

    def __str__(self):
        return "名字是{}，年龄{}岁的人".format(self.name,self.age)
# p = Person("sz",[1,2],18)
# print(p.__dict__)
class Cat(Animal):

    def work(self):
        print("%s在捉老鼠" % self)

    def __str__(self):
        return "名字是{}，年龄{}岁的小猫".format(self.name,self.age)

class Dog(Animal):

    def work(self):
        print("%s在看家" % self)

    def __str__(self):
        return "名字是{}，年龄{}岁的小狗".format(self.name,self.age)

d = Dog("小黑",18)
c = Cat("小红",2)
p = Person("sz",[d,c],18)
p.yang_pets()

p.make_pets_work()

#2.第15章

class Caculator:
    def __check_num_zsq(func):
        def inner(self,n):
            if not isinstance(n,int):
                raise TypeError("当前这个数据的类型有问题，应该是一个整型数据")
            return func(self,n)
        return inner

    @__check_num_zsq
    def __init__(self,num):
        self.__result = num

    @__check_num_zsq
    def jia(self, n):
        self.__result += n

    @__check_num_zsq
    def jian(self, n):
        self.__result -= n

    def cheng(self, n):
        self.__result *= n

    def show(self):
        print("计算的结果是:%d" % self.__result)

c1 = Caculator(2)
c1.jia(6)
c1.jian(4)
c1.cheng(5)
c1.show()