Python 购物车练习 2.0

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

shopping_cart = []

while True:    salary = input("Salary（整数） = ")    if salary.isdigit():        salary = int(salary)        break    else:        print(‘请输入正确的数字‘)

while True:    for i, j in enumerate(product_list, 1):        print(i, j)    print(‘当前余额:‘, salary)    choice = input(‘请输入你想购买的商品编号【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], ‘已经加入您的购物车，当前余额:‘, salary - int(product_list[choice-1][1]))                shopping_cart.append(product_list[choice-1])                salary = salary - int(product_list[choice - 1][1])            else:                print(‘余额不足:‘, salary - int(product_list[choice-1][1]))        else:            print(‘编号错误‘)    elif choice == ‘q‘:        print(‘   已购买商品    金额‘)        for i, j in enumerate(shopping_cart, 1):            print(i, j)        print(‘你的余额为:‘, salary, ‘元。欢迎再次光临!‘)        break    else:        print(‘请输入正确的信息‘)

原文地址：https://www.cnblogs.com/david2018/p/9742304.html