Python--作业1--购物车程序

程序：购物车程序

需求:

1. 启动程序后，让用户输入工资，然后打印商品列表
2. 允许用户根据商品编号购买商品
3. 用户选择商品后，检测余额是否够，够就直接扣款，不够就提醒 
4. 可随时退出，退出时，打印已购买商品和余额

 =============方法1================双重列表=============方法1============

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Author:Huanglinsheng
product_list = [
    ("IPhone", 5000),
    ("mac pro", 8900),
    ("bick", 800),
    ("watch", 10600),
    ("python book", 120),
]
shopping_list = []

salary = input("input your salary:")
if salary.isdigit():
    salary = int(salary)
    while True:
        for index,item in enumerate(product_list):
            print(index,item)
        '''
        for item in product_list:
            print(product_list.index(item),item)
            '''
        user_choice = input("input the number of your choice:")
        #输入的是商品序号
        if user_choice.isdigit():
            user_choice = int(user_choice)
            # 输入的是存在的商品序号
            if user_choice <len(product_list) and user_choice >= 0:
                p_item = product_list[user_choice]
                if p_item[1] <= salary:#买的起
                    shopping_list.append(p_item)
                    salary -= p_item[1]
                    print("Added %s into your car,your courrent balance is 33[31;1m%s33[0m"%(p_item,salary))
                else:#买不起
                    print("33[41;1m你的余额还剩%s是，请充值！33[0m" % salary)
                    break
            # 输入的商品不存在
            else:
                print("the product of you input is not exit,place input again!")
                continue
        #用户需要退出的操作
        elif user_choice == "q":
            for p in shopping_list:
                print(p)
            print("33[41;1m你的账户余额还剩%s33[0m" % salary)
            exit()
        else:
            print("input error, plase input again!")

 =============方法2================字典和列表组合=============方法2============

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Author:Huanglinsheng

product_dict = {'iphone': 5000, 'mobike': 100, 'watch': 5000, 'computer': 15000}
shopping_list = []

salary = int(input("Input your salary:"))
# salary = input("Input your salary:")
# if salary.isdigit():
#     salary = int(salary)
print("33[33;1m商品列表如下：33[0m：")
for key in sorted(product_dict):
    print(key, product_dict[key])

while True:
    options = input('33[32;1m选择要买的商品：33[0m：')
    if options in product_dict.keys():
        if salary >= product_dict[options]:
            shopping_list.append(options)
            salary -= product_dict[options]
            print("你已经成功购买了 [%s] 商品，账户余额为: 33[31;1m%d33[0m" % (options, salary))
        else:
            print("你的余额不足，无法购买该商品  [%s] 请充值！" % options)
        if salary >= min(product_dict.values()):
            print("你的钱还可以购买以下商品：")
            for hls in sorted(product_dict):
                if salary >= product_dict[hls]:
                    print(hls, product_dict[hls])
        else :
            print("你的账户余额不足于购买任何商品，请充值！")
            break

        tag = ''
        while True:
            flag = input("是否继续购买商品（Y/N）：")
            if flag == "y":
                tag = True
                break
            elif flag == "n":
                tag = False
                break
            else:
                print("33[31;1m你的输入有误，请重新输入：33[0m：")
                continue

        if tag is True:
            continue
        else:
            break


    else:
        print("33[31;1m你的商品输入有误，请重新输入：33[0m：")
        continue

if len(shopping_list) == 0:
    print("33[31;1m穷逼没钱买东西33[0m：")
else:
    print("33[33;1m你已经购买的商品列表如下：33[0m：")
    for hc in shopping_list:
        print(hc)

print("账户余额为: 33[31;1m%d33[0m" % salary)