使用@property和@setter装饰器时的递归错误

Question

class Phone:
    def __init__(self,brand,model_name,price):
        self.brand = brand
        self.model_name = model_name
        self.price = price 
    @property
    def price(self):
        return self.price 
    @price.setter
    def price(self,new_value):
        self.price = max(new_value,0)


p1 = Phone('Asus','Asus10',102000)
print(p1.price)

错误：

RecursionError：超过最大递归深度

Answer 1

属性名称和字段名称相同。在字段名称可以解决之前添加下划线。

class Phone:
    def __init__(self,brand,model_name,price):
        self.brand = brand
        self.model_name = model_name
        self._price = price 
    @property
    def price(self):
        return self._price 
    @price.setter
    def price(self,new_value):
        self._price = max(new_value,0)


p1 = Phone('Asus','Asus10',102000)
print(p1.price)