More cats! Fill in this implemention of a class called NoisyCat, which is just like a normal Cat. However, NoisyCat talks a lot -- twice as much as a regular Cat! We may change the implementation of Pet and Cat while testing your code, so make sure you use inheritance correctly.其中class Pet: def init(self, name, owner): self.is_alive = True self.name = name self.owner = owner def eat(self, thing): print(self.name + " ate a " + str(thing) + "!") def talk(self): print(self.name) class Cat(Pet): def init(self, name, owner, lives=9): super().init(name, owner) self.lives = lives def talk(self): print(self.name + " says meow!") def eat(self, thing): super().eat(thing) def lose_life(self): if self.lives > 0: self.lives -= 1 if self.lives == 0: self.is_alive = False else: print(self.name + " has no more lives to lose.")

下面是实现 NoisyCat 类的代码：

class NoisyCat(Cat):
    def talk(self):
        print((self.name + " says meow! ") * 2)

NoisyCat 类继承自 Cat 类，并重写了 talk() 方法。在 NoisyCat 中，talk() 方法会调用 Cat 中的 talk() 方法，并将其输出内容重复一遍。这样，NoisyCat 对象的 talk() 方法输出的内容就是 Cat 对象的两倍。