product_list = [
    [‘iphone6s‘, 5800],
    [‘mac book‘, 9000],
    [‘coffee‘, 32],
    [‘python book‘, 80],
    [‘bicycle‘, 1500]
]

shopping_cart = []

while True:
    salary = input("Salary（整數） = ")
    if salary.isdigit():
        salary = int(salary)
        break
    else:
        print(‘請輸入正確的數字‘)

while True:
    for i, j in enumerate(product_list, 1):
        print(i, j)
    print(‘當前余額:‘, salary)
    choice = input(‘請輸入你想購買的商品編號【q退出】:‘)
    if choice.isdigit():
        choice = int(choice)
        if 0 < choice < len(product_list) + 1:
            if salary >= int(product_list[choice-1][1]):
                print(product_list[choice-1][0], ‘已經加入您的購物車，當前余額:‘, salary - int(product_list[choice-1][1]))
                shopping_cart.append(product_list[choice-1])
                salary = salary - int(product_list[choice - 1][1])
            else:
                print(‘余額不足:‘, salary - int(product_list[choice-1][1]))
        else:
            print(‘編號錯誤‘)
    elif choice == ‘q‘:
        print(‘   已購買商品    金額‘)
        for i, j in enumerate(shopping_cart, 1):
            print(i, j)
        print(‘你的余額為:‘, salary, ‘元。歡迎再次光臨!‘)
        break
    else:
        print(‘請輸入正確的信息‘)

Python 購物車練習 2.0