改了很多次还是没运行成功，求解答

Question

class Restaurant:
    def __init__(self,restaurant_name,cuisine_type):#必须在等号后才能调用
        self.restaurant_name=restaurant_name
        self.cuisine_type=cuisine_type
        self.number_reading=0
    def describe_restaurant(self):
        print(f"\nThis restaurant's name is {self.restaurant_name}.")
        print(f"This is a {self.cuisine_type} restaurant.")
    def open_restaurant(self):
        print(f"This restaurant is open.")
    def set_number_served(self,people):
        if people>=self.people_reading:
            self.number_reading=people
            print(f"There are {self.number_reading} guests.")
        else:
            print("You can't roll back on it!")

restaurant1=Restaurant('Welcome','Mexico')
print(f"This restaurant's name is {restaurant1.restaurant_name}")
restaurant2=Restaurant('Tianchao','China')
restaurant3=Restaurant('Reqing','China')

print(f"This is a {restaurant1.cuisine_type} restaurant.")
restaurant1.describe_restaurant()
restaurant1.open_restaurant()
print(f"\nThis restaurant's name is {restaurant2.restaurant_name}")
print(f"This is a {restaurant2.cuisine_type} restaurant.")
restaurant2.describe_restaurant()
print(f"\nThis restaurant's name is {restaurant3.restaurant_name}")
print(f"This is a {restaurant3.cuisine_type} restaurant.")
restaurant3.describe_restaurant()
restaurant1.number_reading(23)
restaurant2.number_reading(33)
restaurant3.number_reading(43)

Answer 1

number_reading是个变量，应该使用”=“去赋值
你给它个括号，给它个值是把它当函数用？