python文件部分：

user = {'username':None}

shopping_trolley = {}

shopping_num = [0]

money = [0]

my_money = [0]

#获取商品列表

def get_goods_list():

with open('shopping.txt', encoding='utf-8') as fr:

shopping_dic = eval(fr.read())

return shopping_dic

shopping_dic = get_goods_list()

#登录

def login():

if not user['username']:

print("欢迎来到登录页面^-^\n")

usename = input("请输入你的用户名：")

password = input("请输入你的密码：")

#打开文件判断文件中是否存在用户名和密码

with open('user_info.txt',encoding='utf-8') as fr:

data = fr.read().split('|')

user_info = (f"{usename}:{password}")

if user_info in data:

print("登录成功！")

print(f"欢迎{usename},你当前的账户余额为：{my_money[0]}\n")

user['username'] = usename

else:

print("登录失败")

else:

print(f"尊敬的:{user['username']},你已经登录，无需重复登录^-^")

#注册

def register():

print("欢迎来到注册页面^-^\n")

#获取用户注册的用户名和密码

username = input("请输入你的用户名：")

password = input("请输入你的密码：")

#将注册信以追加的形式存入文件

with open('user_info.txt','a') as fa:

fa.write(f"{username}:{password}|")

print("注册成功！")

#购物

def shopping():

if user['username']:

print("欢迎来到购物界面！^-^")

while True:

for k,v in enumerate(shopping_dic):

print(f"序号:{k},{v}")

get_goods_num = input("请输入商品序号(不需要则按q退出):")

if get_goods_num == 'Q' or get_goods_num =='q':

print(f"你当前购物车中有{shopping_num[0]}件物品")

break

if get_goods_num =="":

print("请输入正确的序号\n")

continue

get_goods_num = int(get_goods_num)

goods = shopping_dic[get_goods_num]

print(f"{goods}加入购物车成功\n")

goods_name = goods[0]

if goods_name in shopping_trolley:

shopping_trolley[goods_name] += 1

shopping_num[0] +=1

else:

shopping_trolley[goods_name] = 1

shopping_num[0] += 1

money[0] += goods[1]

else:

print("您当前尚未登录！")

#购物车

def shopping_list():

if user['username']:

print("欢迎来到购物车功能^-^")

while True:

print(f"你当前加入购物车的商品为{shopping_trolley},总价格为{money[0]}")

delete = input("请问是否移除商品，不移除则按q退出：")

if delete == 'Q' or delete =='q':

break

elif delete =="":

print("请输入正确的名称或字母\n")

continue

shopping_trolley[delete] -=1

if shopping_trolley[delete] == 0:

shopping_trolley.pop(delete)

for goods in shopping_dic:

if delete in goods:

money[0] -= goods[1]

shopping_num[0] -= 1

else:

print("请登录后再试！")

#结算

def pay():

if user['username']:

print("欢迎来到结算页面^-^")

print(f"您当前的账户余额为：{my_money[0]}")

while True:

print(f"您当前中的购物车中有：{shopping_trolley},总价为{money[0]}")

settle_account = input("是否结算，结算请输入y，退出请输入n(退出则会清空购物车):").lower()

if settle_account == 'y':

if my_money[0] > money[0]:

print(f"支付{money[0]}成功,已成功购买{shopping_trolley}")

shopping_num[0] = 0

my_money[0] = my_money[0] - money[0]

print(f"你当前余额为：{my_money[0]}元")

shopping_trolley.clear()

money[0] = 0

break

else:

print(f"你的余额不允许你这么做哦,你当前余额为{my_money[0]}←_←,请充值后再重试")

elif settle_account == 'n':

shopping_trolley.clear()

money[0] = 0

print("清空购物车成功！")

break

else:

print("输入不合法")

else:

print("请登录后再试！")

#充值

def recharge():

if user['username']:

print("欢迎来到充值界面^-^")

print(f"您当前余额为：{my_money[0]}")

while True:

top_up = input("请输入你充值的金额:")

if top_up.isdigit():

my_money[0] += int(top_up)

if my_money[0] != 0:

print("充值成功!")

print(f"您当前的账户余额为：{my_money[0]}")

break

elif top_up == "":

print("请输如你需要的数目！")

else:

print("充值失败")

continue

else:

print("请登录后再试！")

#退出登录

def exit():

if user['username']:

while True:

exi_login = input(f"尊敬的:{user['username']},是否退出登录,退出请输入y,取消请输入n:").lower()

if exi_login == 'y':

user['username'] = ""

print("退出成功！")

break

elif exi_login == 'n':

print("取消退出登录成功！")

break

else:

print("请输入y/n")

else:

print("你当前尚未登录!")

# 主函数

def mian():

mian_list = """

1：注册

2：登录

3：购物

4：购物车

5：结账

6：充值入口

7：退出登录

"""

mian_func = {

'1': register,

'2': login,

'3': shopping,

'4': shopping_list,

'5': pay,

'6': recharge,

'7': exit

}

mian_len = len(mian_func)

while True:

print(mian_list)

select_serv=input("请选择服务(按Q退出):")

if select_serv == 'Q' or select_serv =='q':

print("欢迎下次光临^-^")

break

if not select_serv.isdigit():

print('请输入数字！')

continue

# select_serv = int(select_serv)

if select_serv > str(mian_len):

print("你输入的数字不合法！")

continue

mian_func[select_serv]()

mian()

购物列表文件

[

['变形金刚', 199],

['玩具汽车', 299],

['电动玩具', 399],

['流光星陨', 499],

['阿波菲斯', 599],

['荒古遗尘', 699],

['圣耀救赎', 799],

['苍穹幕落', 899],

['夜雨黑瞳', 999],

['界·夜雨黑瞳', 1999]]