构建一个商品类，__init__函数类似于构造方法，self类似于this

1 import random2 class Goods:3     def __init__(self, name, price):4         self.name = name5         self.price = price6 7     def changeprice(self, m, n):8         self.price = random.randint(m, n)9         return self.price

再写一个商店类，用于存放商品

1 class Gshop: 2     goodslist = [] 3     def __init__(self, g): 4         self.goodslist.append(g) 5  6     def add(self, g): 7         self.goodslist.append(g) 8  9     def changegoodslistprice(self):10         for w in self.goodslist:11             w.changeprice(20, 50)12             print(w.name, w.price)

 

实例化对象，执行对象的方法

1 import goods,gshop2 toy = goods.Goods('洋娃娃', 30)3 gshopdemo = gshop.Gshop(toy)4 #print(toy.name, toy.price)5 6 car_wlhg = goods.Goods('五菱宏光', 30000)7 gshopdemo.add(car_wlhg)8 gshopdemo.changegoodslistprice()

运行结果：