Python: 练习 魔术函数__add__(self,other)

class CellPhone:  # 定义一个手机类的模板,包括品牌(brand)和价格(price)
    def __init__(self, brand, price=0.0):
        self.brand = brand
        self.price = price

    def __str__(self):
        return str(self.price)

    def __add__(self, other):  # 魔术函数,self 指实例化对象本身,other 指另一个实例化对象本身.
        return CellPhone(brand='', price=(self.price + other.price))  # 将实例化对象的价格求和,得到两个品牌手机价格的和.


c1 = CellPhone('iPhone 7', 7000.0)  # 实例化对象1
c2 = CellPhone('MI note 2', 2000.0)  # 实例化对象2
c3 = CellPhone('Nokia', 1000.0)  # 实例化对象3

print(c1 + c2 + c3)