我想将项目追加到列表中。但只有中间项目添加到列表中。这是我编写的代码。
while True:
topping = input("Enter a topping which you want on your pizza: ")
if topping != "quit":
toppings = []
toppings.append(topping)
print("You have selected " + topping + " as a topping for your pizza")
else:
break
print("You have chosen ", end="")
print(toppings, end="")
print(" as toppings for your pizza")
最佳答案
这是你应该做的
toppings = []
while True:
topping = input("Enter a topping which you want on your pizza: ")
if topping != "quit":
toppings.append(topping)
print("You have selected " + topping + " as a topping for your pizza")
else:
break
print("You have chosen ", end="")
print(toppings, end="")
print(" as toppings for your pizza")
由于顶部是在循环内声明的,因此每次迭代都将其初始化为空列表