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

1. class Turtle:
   
2.     def __init__(self, x):
   
3.         self.num = x
   
4. 
   
5. class Fish:
   
6.     def __init__(self, x):
   
7.         self.num = x
   
8. 
   
9. class Pool:
   
10.     def __init__(self, x, y):
    
11.         self.turtle = Turtle(x)
    
12.         self.fish = Fish(y)
    
13. 
    
14.     def print_num(self):
    
15.         print('共有乌龟%d只，鱼%d只' % (self.turtle.num, self.fish.num))
    

复制代码

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