python3 购物车 增改查终极版~

 1 #!usr/bin/env/ python
 2 # -*- coding:utf-8 -*-
 3 # Author: XiaoFeng
 4 
 5 goods = [{"name": "铅笔", "price": 2},
 6          {"name": "橡皮", "price": 1},
 7          {"name": "尺子", "price": 3}]
 8 shopping_car = {}
 9 total = 0
10 print("\033[31;1mWelcome to XiaoXiao's store!\033[0m".center(70, "*"))
11 while 1:
12     print("-" * 59)
13     for index, i in enumerate(goods):
14         print("商品名：{} {}\t价格：{}元".format(index + 1, i["name"], i["price"]))
15     choice = input("请输入您的选择（a:添加, d:调整, c: 查看购物车 q: 结算）:").strip()
16     if choice.lower() == "a":
17         while 1:
18             order = input("请输入商品编号(b:返回)：").strip()
19             if order.isdigit():
20                 order = int(order)
21                 if 0 < order <= len(goods):
22                     while 1:
23                         num = input("请输入要购买的数量(b:返回)：").strip()
24                         if num.isdigit():
25                             num = int(num)
26                             if goods[order - 1]["name"] in shopping_car:
27                                 shopping_car[goods[order - 1]["name"]]["num"] = \
28                                     shopping_car[goods[order - 1]["name"]]["num"] + num
29                                 break
30                             else:
31                                 shopping_car[goods[order - 1]["name"]] = \
32                                     {"price": goods[order - 1]["price"], "num": num}
33                                 break
34                         elif num.lower() == "b":
35                             break
36                         else:
37                             print("请输入数字！")
38                 else:
39                     print("请输入显示范围内的序号！")
40             elif order.lower() == "b":
41                 break
42             else:
43                 print("请输入选择序号!")
44     elif choice.lower() == "d":
45         while 1:
46             order_1 = input("请输入想要调整的商品号(b:返回)：").strip()
47             if order_1.isdigit():
48                 order_1 = int(order_1)
49                 if goods[order_1 - 1]["name"] in shopping_car:
50                     while 1:
51                         num_1 = input("请输入想要调整的数量(b:返回)").strip()
52                         if num_1.isdigit():
53                             num_1 = int(num_1)
54                             if num_1 >= 0:
55                                 shopping_car[goods[order_1 - 1]["name"]]["num"] = num_1
56                                 break
57                             elif num_1 < 0:
58                                 print("请别乱来，谢谢")
59                             else:
60                                 print("请输入正确的数字！")
61                         elif num_1.lower() == "b":
62                             break
63                         else:
64                             print("请输入数字或选择返回b！")
65                 else:
66                     print("您还没有选购此商品，赶快添加吧~")
67             elif order_1.lower() == "b":
68                 break
69             else:
70                 print("请输入有效编号")
71 
72     elif choice.lower() == "c":
73         total = 0
74         if shopping_car:
75             print("\033[40;1m购物车\033[0m".center(50, "-"))
76             for k, v in shopping_car.items():
77                 print("商品名:{}\t价格：{}元\t\t数量:{}个".format(k, v["price"], v["num"]))
78                 total += v["price"] * v["num"]
79             print("总计:", total, "元")
80         else:
81             print("购物车为空哦，快快选购吧~")
82 
83     elif choice.lower() == "q":
84         account = input("一共是%d元，现金还是扫码？ 嘻嘻！）" % total).strip()
85         if account.isdigit():
86             account = int(account)
87             if account >= total:
88                 print("付款%d元,收您%d元,找零%d元，谢谢惠顾，欢迎下次光临~！" % (account, total, account - total))
89                 break
90             else:
91                 print("您的余额不足哦，叫媳妇儿来付钱吧~")
92         else:
93             print("请刷卡，别开玩笑，给钱或者把东西留下，或者打电话叫你媳妇儿来！")
94     else:
95         print("请输入正确操作！")