1 # Author : Kelvin 2 # Date : 2019/1/25 15:20 3 class Foo: 4     def __init__(self): 5         self.original_price = 100 6         self.discount = 0.8 7  8     @property 9     def price(self):10         new_price = self.original_price * self.discount11         return new_price12 13     @price.setter14     def price(self, val):15         self.original_price = val16 17     @price.deleter18     def price(self):19         del self.original_price20 21 22 f = Foo()23 print(f.price)24 f.price = 20025 print(f.price)26 del f.price27 print(f.__dict__)28 29 """输出结果：30 80.031 160.032 {'discount': 0.8}33 """