类的组合用法

类的组合用法

 1 class Turtle:
 2     def __init__(self, x):
 3         self.num = x
 4 
 5 
 6 class Fish:
 7     def __init__(self, y):
 8         self.num = y
 9 
10 
11 class Pool:
12     def __init__(self, x, y):
13         # 通过调用Turtle类、Fish类来形成组合
14         self.turtle = Turtle(x)
15         self.fish = Fish(y)
16 
17     def printnum(self):
18         print('水池里共有%d只乌龟，%d条鱼' % (self.turtle.num, self.fish.num))
19 
20 
21 p = Pool(6, 8)
22 p.printnum()
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原文地址：https://www.cnblogs.com/gzj137070928/p/13825594.html