python编写购物车

上次的学习又没有坚持下来，工作忙的不可开交，但我反思了一下还是自己没有下定决心好好学习，所以这次为期3个月的学习计划开始了，下面是这次学习后重新编写的购物车初版代码。

 1 # 功能要求：
 2 # 要求用户输入总资产，例如：2000
 3 # 显示商品列表，让用户选择商品，加入购物车
 4 # 购买，如果商品总额大于总资产，提示账户余额不足，否则，购买成功。
 5 # 附加：可充值、某商品移除购物车
 6 goods = [
 7     {"name": "电脑", "price": 1999},
 8     {"name": "鼠标", "price": 10},
 9     {"name": "游艇", "price": 20},
10     {"name": "美女", "price": 998},
11 ]
12 zongxiaofei = 0
13 gouwuche = {}
14 zongzichan = int(input("欢迎来到小小商店，请输入您的总资产："))
15 print("您的总资产为：", zongzichan, "\n商品名称、价格如下：")
16 for shangpin_list in goods:
17     print(shangpin_list["name"], shangpin_list["price"])
18 print("\n")
19 while True:
20     goumai = input("请输入'商品名称'加入购物车或者输入'y'或'Y'去购物车进行结算：")
21     if goumai.lower() == "y":
22         break
23     for shangpin_list2 in goods:
24         if shangpin_list2["name"] == goumai:
25             if  shangpin_list2["name"] not in gouwuche.keys():
26                 gouwuche[shangpin_list2["name"]] = {"num": 1, "jiage": shangpin_list2["price"]}
27             else:
28                 gouwuche[shangpin_list2["name"]]["num"] = gouwuche[shangpin_list2["name"]]["num"] + 1
29 for jiesuan_key , jiesuan_values in gouwuche.items():
30     jiesuan_num = jiesuan_values["num"]
31     jiesuan_jiage = jiesuan_values["jiage"]
32     xiaofei = jiesuan_num * jiesuan_jiage
33     zongxiaofei = zongxiaofei + xiaofei
34 while True:
35     if zongxiaofei > zongzichan:
36         print("购买失败！")
37         print("您的总资产为：", zongzichan, "您总消费金额:", zongxiaofei, "超出金额：", zongxiaofei - zongzichan)
38         chongzhi = input("请输入'y'or'Y'前往充值或输入'n'or'N'回到购物车删除多余商品：")
39         while True:
40             if chongzhi.lower() == "y":
41                 chongzhi_money = int(input("请输入充值金额："))
42                 zongzichan = zongzichan + chongzhi_money
43                 print("充值成功，您的总资产为：", zongzichan, "\n")
44                 break
45             if chongzhi.lower() == "n":
46                 print("\n您购物车内消费商品名称、商品数量、商品单价如下：")
47                 for jiesuan_key2, jiesuan_values2 in gouwuche.items():
48                     print(jiesuan_key2, jiesuan_values2["num"], jiesuan_values2["jiage"])
49                 shanchu = input("\n请输入商品名称来减少商品数量1：")
50                 for jiesuan_key3 , jiesuan_values3 in gouwuche.items():
51                     if jiesuan_key3 == shanchu:
52                         if jiesuan_key3 in gouwuche.keys():
53                             zongxiaofei = zongxiaofei - gouwuche[jiesuan_key3]["jiage"]
54                 break
55     else:
56         print("购买成功！")
57         print("您的总资产为：", zongzichan, "您总消费金额:", zongxiaofei, "结余金额：", zongzichan - zongxiaofei)
58         exit()

这个版本是带充值、删除购物车商品，最后结算金额。

后面我会学习简化代码，编写另一版实时判断余额的。