VS Code中Python代码if语句内break失效问题求助

我编写的Python代码在VS Code中运行时，输入0后，if语句中的break并未生效，无法跳出while循环执行最后一个for循环。我确认语法无误且已完成调试，将break替换为pass并调整缩进后代码可正常运行，请问如何让break正常工作？

代码如下：

from contents import pantry, recipes


def add_shopping_item(data: dict, item: str, amount: int) -> None:
    """add_shopping_item Add a tuple containing `item` and 
    `amount` to the `data` dict.
    """
    # if item in data:
    #     data[item] += amount
    # else:
    #     data[item] = amount
    data[item] = data.setdefault(item, 0) + amount


display_dict = {}
for index,key in enumerate(recipes):
    display_dict[str(index + 1)] = key

shopping_list = {} 
while True:
    #Display a menu of the recipes we know how to cook
    print("Please choose your recipe")
    print("-------------------------")
    for key, value in display_dict.items():
        print(f"{key} - {value}")

    choice = input(": ")

    if choice == 0:
        break
    elif choice in display_dict:
        selected_item = display_dict[choice]
        print(f"You have selected {selected_item}")
        print("Checking ingredients...")
        ingredients = recipes[selected_item]
        print(ingredients)
        for food_item, required_quantity in ingredients.items():
            quantity_in_pantry = pantry.get(food_item, 0)
            if required_quantity <= quantity_in_pantry:
                print(f"\t{food_item} OK.")
            else:
                 quantity_to_buy = required_quantity - quantity_in_pantry
                 print(f"\tYou need to buy {quantity_to_buy} of {food_item}") 
                 add_shopping_item(shopping_list, food_item, quantity_to_buy)


for things in shopping_list.items():
    print(things)

问题核心是类型不匹配：input()函数返回的是字符串类型，而你判断时用的是choice == 0（0是整数），两者永远不相等，导致break条件从未触发。

有两种修复方式：

1. 直接对比字符串（最简单）
   修改break的判断条件为：

   if choice == "0":
       break
   

2. 转换输入为整数（需处理非法输入）
   如果希望用整数判断，需要先把输入转为整数，同时处理用户输入非数字的情况，避免报错：

   choice = input(": ")
    try:
        choice_int = int(choice)
        if choice_int == 0:
            break
    except ValueError:
        print("请输入有效的数字选项")
    # 保留后续的elif判断逻辑
   

内容的提问来源于stack exchange，提问作者Cemre Tombuloğlu