我正在尝试执行这个非常简单的代码,但由于某种原因它返回此错误,指出该属性不存在。
class Restaurant:
def __init__(self, restaurant_name, cuisine_type):
self.restaurant_name = restaurant_name
self.cuisine_type = cuisine_type
self.number_served = 0
def describe_restaurant(self):
print(f"{self.restaurant_name} is a {self.cuisine_type} restaurant.")
def open_restaurant(self):
print(f"{self.restaurant_name} is opened!")
def set_number_served(self, number):
self.number_served = number
当我执行以下操作时,一切正常:
restaurantOne = Restaurant("Rest", "Chinese")
restaurantOne.number_served = 10
print(restaurantOne.number_served)
10
但后来我试试这个:
restaurantOne.set_number_served(10)
我没有更改 number_served,而是收到了这条消息:
回溯(最后一次通话):
文件“
有人知道为什么会这样吗?