老男孩购物车程序

salary = input('您的工资是：')
item_list = [
    ('iphone',5800),
    ('pc',12325),
    ('watch',7000),
    ('book',38),
    ('pen',5),
    ('game',1000)
]
buy_list=[]
print(type(salary))
while True:
    if salary.isdigit():
        salary = int(salary)
        break
    else:
        salary = input('请输入正确的工资,您的工资是：')

while True:
    # print(salary)

        # print(type(salary))
        # print(salary)
        for index, item in enumerate(item_list):
            print(index, item)
        user_choice = input('要买什么>>>：')
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice < len(item_list) and user_choice >= 0:
                p_item = item_list[user_choice]
                if salary >= p_item[1]:
                    salary -= p_item[1]
                    buy_list.append(p_item)
                    print('余额：',salary)
                else:
                    print('没钱了')
            else:
                print('输入正确产品编号：')
        elif user_choice == 'q':
            print('-------------shopping list--------------')
            for i in buy_list:
                print(i)
            print('还剩下:',salary)
            exit()
        else:
            print("输入正确商品")