同学满分代码，购物车。

同学代码，购物车。

 

#!/usr/bin/env python
__author__ = 'liudong'
#定义空的购物列表：
cart = []
#查询用户余额
import os,sys
def money():
    filename = sys.path[0]+'/money.txt'
    if os.path.exists(filename):
        m = open('./money.txt','r')
        mon = m.readline()
        m.close()
        mon = int(mon)
        return mon
    else:
        exitt = False
        while not exitt:
            aa = input("33[31m请输入你的工资： 33[0m").strip()
            if aa.isdigit():
                mon = int(aa)
                exitt = True
            else:
                print ("请输入正确的数字。。")
        return mon
#保存用户输入的余额
def free_money(x):
    a = open('./money.txt','w')
    a.write('%s'%x)
    a.close()
#定义余额变量
wage = money()
wage1 = wage #定义总余额
shoping_money3 = 0 #定义用户总共消费
#定义商品列表：
shop = [
    ["Condoms",100],
    ["pill",99],
    ["girlfriend",1],
    ["mac book",8888],
    ["apple",5],
    ["乐视1S",1099]
]
#循环显示购物信息：

while True:
    #打印出商品列表和价格：
    print('33[32m欢迎光临33[37m'.center(50,'-'))
    print('33[32m商品列表33[37m'.center(50,'-'))
    for index,p in enumerate(shop):
        print (index,p[0],p[1])
    #获取用户输入:
    shoping = input("请输入商品编号,结算请输入33[32mall33[37m,显示购物车请输入：33[32mlist33[37m,显示余额请输入:33[32mfree33[37m ： ").strip()
    #判断用户输入是否合法
    if shoping.isdigit():
        shoping = int(shoping)
        if len(shop) < shoping:
            print ('33[31m你输入的产品号不存在,请重新选择商品号！33[37m')
            continue
        shoping_money = shop[shoping][1]
        if shoping_money < wage: #判断用户是否可以购买
            while True:
                num = input("请输入购买数量： ").strip()
                if not num.isdigit():
                    print ("33[31m请正确输入商品数量。。33[0m")
                else:
                    num = int(num)
                    if num == 0:
                        break
                    else:
                        shoping_money2 = shoping_money * num #判断商品数量的价钱
                        if shoping_money2 < wage:   #判断用户是否可以购买
                            cart.append(shop[shoping][0])  #把商品名称添加到购物车
                            cart.append(num)    #把商品数量添加到购物车
                            print ("33[31m您的商品已经加入购物车 %s 数量：%s 33[0m"%(shop[shoping][0],num))
                            wage = wage - shoping_money2   #算出用户剩余金额
                            shoping_money3 +=shoping_money2   #算出用户总消费金额
                            break
                        else:
                            print ("33[31m你的工资买不起%s个%s 33[0m"%(num,shop[shoping][0]))
                            break
        elif shoping_money > wage: #商品不能购买的提示
            print ("33[31m你的工资还买不起此商品: %s33[0m" %shop[shoping][0])
        else:   #商品不能购买的提示
            print ("33[31m你的工资太少了，还是去努力赚钱吧。。33[0m")
            break
    elif shoping == "list":  #显示购物列表
        print ("33[31m----------shopping list----------33[0m")
        num = 0
        aa = len(cart)
        bb = int(aa / 2)
        for x in range(bb):
            print (cart[num],"33[31m数量：33[0m",cart[num+1])
            num+=2
        print ("33[31m---------------------------------33[0m")
    elif shoping == "free":   #显示剩余金额
        if not len(cart):
            print ("33[31m你还没有购物，剩余:%s33[0m" %wage)
        else:
            print ("33[31m你一共花费：%s,剩余：%s33[0m"%(shoping_money3,wage))
    elif shoping == "all": #用户结算
        if not len(cart): #判断购物车是否为空
            print ("33[31m你的购物车为空，不需要结算。。33[0m")
            free_money(wage)
            break
        else: #购物车不为空，显示购物列表和购买商品数量
            print ("33[31m----------shopping list----------33[0m")
            num = 0
            aa = len(cart)
            bb = int(aa / 2)
            for x in range(bb):
                print (cart[num],"33[31m数量：33[0m",cart[num+1])
                num+=2
            print ("33[31m---------------------------------33[0m")
            gm = input("33[31m是否确认购买：Y or N  33[0m ").strip()   #判断用户是否购买商品
            if gm == "N" or gm == "n":   #用户不购买
                print ("你没有购买任何商品，剩余：33[31m%s33[0m"%wage1)
                free_money(wage1)
                break
            elif gm == "y" or gm == "Y":   #用户购买
                print ("你一共花费33[31m%s33[0m还剩下33[31m%s33[0m"%(shoping_money3,wage))
                free_money(wage)
                break
            else:  #错误输入，默认用户不购买
                print ("你输入的不正确，没有购买任何商品，剩余：33[31m%s33[0m"%wage1)
                free_money(wage1)
                break

 22222222222

 1 import random
 2 shopping_list = []
 3 shop_list = []
 4 add = []
 5 p = []
 6 condition = True
 7 identity_input = input(
 8                         "1. 用户
"
 9                         "2. 商家
"
10                         "请选择对应身份序号[1|2]：")
11 if str.isdigit(identity_input):
12     identity_input = int(identity_input)
13     if identity_input == 1:
14         money_input = input("欢迎用户访问,输入购物金额：")
15         if money_input.isdigit():
16             money_input = int(money_input)
17             with open("shoplist.txt", encoding='utf-8') as file:
18                 for list in file:
19                     shop_list.append((list.strip().split()[0], list.strip().split()[1]))
20                 while condition:
21                     for index, i in enumerate(shop_list):
22                         print((index+1), i)
23                     choice = input("请输入选择的商品序号,选择完毕q退出:")
24                     if choice.isdigit():
25                         choice = int(choice)
26                         if choice <= len(shop_list) and choice >= 0:
27                             p = shop_list[choice-1]
28                             a = int(p[1])
29                             if a <= money_input: #买的起
30                                 shopping_list.append(p)
31                                 money_input -= a
32                                 print("增加了%s商品，你的钱剩余%s" % (p, money_input))
33                             else:
34                                 print("余额不足,请重新选择，按q退出")
35                         else:
36                                 print ("商品%s不存在" % choice)
37                     elif choice == 'q':
38                             print("--------已购商品列表--------")
39                             for w in shopping_list:
40                                 print(w)
41                             print("余额为%s" % money_input)
42                             exit()
43     elif identity_input == 2:
44         print("欢迎商家访问：")
45         with open("shoplist.txt", encoding='utf-8') as file:
46             for list in file:
47                 shop_list.append((list.strip().split()[0], list.strip().split()[1]))
48             while True:
49                 for index, i in enumerate(shop_list):
50                     print((index+1), i)
51                 business_input = input(
52                                         "1.删除
"
53                                         "2.添加
"
54                                         "按q退出
"
55                                       "请选择删除还是添加1|2：")
56                 if str.isdigit(business_input):
57                     business_input = int(business_input)
58                     if business_input == 1:
59                         business_choice = int(input("请输入要删除的商品序号:"))
60                         del shop_list[business_choice-1]
61                         c = 0
62                         with open('shoplist.txt', 'w', encoding='utf-8') as d:
63                             while c < len(shop_list):
64                                 d.write(shop_list[c][0])
65                                 d.write(' ')
66                                 d.write(shop_list[c][1])
67                                 d.write('
')
68                                 c += 1
69                     elif business_input == 2:
70                         business_choice1 = input("请输入要添加的商品名称:")
71                         business_choice2 = input("请输入要添加的商品价格:")
72                         add.append(business_choice1)
73                         add.append(business_choice2)
74                         shop_list.append(add[-2:])
75                         with open('shoplist.txt', 'a', encoding='utf-8') as f:
76                             f.write(business_choice1)
77                             f.write(' ')
78                             f.write(business_choice2)
79                             f.write('
')
80                     else:
81                         print("请输入正确的序号!!!!!!!!!!!!!!!!!!!!!!")
82                 elif business_input == 'q':
83                     print("正在退出。。。 。。。")
84                     exit()
85     else:
86         print("身份输入错误，程序退出。。。 。。。")
87 else:
88     print("输入错误，没有输入的身份序号。")