Python--039类和对象：拾遗

游戏小虾米

Tip：


一，理论

二，应用



三，课后练习

class Turtle:
    def __init__(self, x):
        self.num = x

class Fish:
    def __init__(self, x):
        self.num = x

class Pool:
    def __init__(self, x, y):
        self.turtle = Turtle(x)
        self.fish = Fish(y)

    def print_num(self):
        print('共有乌龟%d只，鱼%d只' % (self.turtle.num, self.fish.num))

>>> pool = Pool(5, 6)
>>> pool.print_num()
共有乌龟5只，鱼6只