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。

# 功能要求：
# 要求用户输入总资产，例如：2000
# 显示商品列表，让用户选择商品，加入购物车
# 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。
# 附加：可充值、某商品移除购物车
goods = [
    {"name": "电脑", "price": 1999},
    {"name": "鼠标", "price": 10},
    {"name": "游艇", "price": 20},
    {"name": "美女", "price": 998},
]
zongxiaofei = 0
gouwuche = {}
zongzichan = int(input("欢迎来到小小商店，请输入您的总资产："))
print("您的总资产为：", zongzichan, "\n商品名称、价格如下：")
for shangpin_list in goods:
    print(shangpin_list["name"], shangpin_list["price"])
print("\n")
while True:
    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：")
    if goumai.lower() == "y":
        break
    for shangpin_list2 in goods:
        if shangpin_list2["name"] == goumai:
            if  shangpin_list2["name"] not in gouwuche.keys():
                gouwuche[shangpin_list2["name"]] = {"num": 1, "jiage": shangpin_list2["price"]}
            else:
                gouwuche[shangpin_list2["name"]]["num"] = gouwuche[shangpin_list2["name"]]["num"] + 1
for jiesuan_key , jiesuan_values in gouwuche.items():
    jiesuan_num = jiesuan_values["num"]
    jiesuan_jiage = jiesuan_values["jiage"]
    xiaofei = jiesuan_num * jiesuan_jiage
    zongxiaofei = zongxiaofei + xiaofei
while True:
    if zongxiaofei > zongzichan:
        print("购买失败！")
        print("您的总资产为：", zongzichan, "您总消费金额:", zongxiaofei, "超出金额：", zongxiaofei - zongzichan)
        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：")
        while True:
            if chongzhi.lower() == "y":
                chongzhi_money = int(input("请输入充值金额："))
                zongzichan = zongzichan + chongzhi_money
                print("充值成功，您的总资产为：", zongzichan, "\n")
                break
            if chongzhi.lower() == "n":
                print("\n您购物车内消费商品名称、商品数量、商品单价如下：")
                for jiesuan_key2, jiesuan_values2 in gouwuche.items():
                    print(jiesuan_key2, jiesuan_values2["num"], jiesuan_values2["jiage"])
                shanchu = input("\n请输入商品名称来减少商品数量1：")
                for jiesuan_key3 , jiesuan_values3 in gouwuche.items():
                    if jiesuan_key3 == shanchu:
                        if jiesuan_key3 in gouwuche.keys():
                            zongxiaofei = zongxiaofei - gouwuche[jiesuan_key3]["jiage"]
                break
    else:
        print("购买成功！")
        print("您的总资产为：", zongzichan, "您总消费金额:", zongxiaofei, "结余金额：", zongzichan - zongxiaofei)
        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。