1 class Goods: 2 def __init__(self,price,discount): 3 self.price = price 4 self.discount = discount 5 6 @property 7 def price1(self): 8 return self.price * self.discount 9 10 @price1.setter # 可以设置实例属性 11 def price1(self, val): 12 self.discount = val 13 14 @price1.deleter # 可以删除实例属性 15 def price1(self): 16 del self.price 17 18 19 g1 = Goods(100,0.8) 20 print(g1.price1) 21 g1.price1 = 0.45 22 print(g1.price1) 23 输出： 24 80.0 25 45.0