一个炒鸡简单的购物车

一个炒鸡简单的购物车

# 我自己新建了两个文件；一个存放用户的user_info.txt文件和存放商品信息的goods_info 




choose_goods_dict = {}
user_lt = []
def register():
    """注册"""
    print('*'*10,'欢迎来到注册功能！','*'*10)
    username_inp = input("请设置你的用户名：")
    pwd_inp = input("请输入你的密码：")
    register_count = 0
    while register_count <3:
        re_pwd_inp = input("请确认你的密码：")
        if pwd_inp != re_pwd_inp:
            print('两次输入的密码不同，请重新输入')
            register_count +=1
            continue
        with open(r'user_info.txt','a',encoding='utf-8') as fa:
            fa.write(f'{username_inp}:{pwd_inp}\n')
        print('恭喜注册成功！')
        user_lt.append(username_inp)
        return


def login():
    """"登录"""
    if  not user_lt == []:
        print('您已登录过了，请先注销再重新登录')
        return
    print('*' * 10, '欢迎来到登录功能！', '*' * 10)
    login_count = 0
    while login_count < 3:
        username_inp = input('请输入你的用户名：')
        pwd_inp = input('请输入你的密码：')
        with open(r'user_info.txt', 'r', encoding='utf8') as fr:
            for i in fr:
                user_info = i.strip()
                username, pwd = user_info.split(':')
                if username_inp == username and pwd_inp == pwd:
                    print('登录成功！')
                    user_lt.append(username)
                    print(user_lt)
                    return
            else:
                print('登录失败')
                login_count += 1


def shopping():
    """购物"""
    if user_lt == []:
        print('请先登录！')
        return
    print('*' * 10, '欢迎来到购物功能！', '*' * 10)
    with open(r'goods_info.txt','r',encoding='utf-8') as fr:
        goods_info = fr.read()
        print(f'商品如下：\n{goods_info}')
        while True:
            goods_inp = input('请输入你想要的商品，按z结束购物')
            goods_dict = eval(goods_info)
            if goods_inp not in goods_dict:
                print('请选择正确的数字！')
                continue
            goods = goods_dict[goods_inp]
            if goods in choose_goods_dict:
                choose_goods_dict[goods] +=1
            elif goods not in choose_goods_dict:
                choose_goods_dict[goods] = 1
            print(f'{goods}已成功加入购物车')
            if goods_inp == 'z':
                print(f'您总共购买了：{choose_goods_dict}，请前往购物车结算！')
                return



def shopping_cart():
    """购物车结算"""
    if user_lt == []:
        print('请先登录！')
        return
    print('*' * 10, '欢迎来到购物车！', '*' * 10)
    print(f'您购物车里有{choose_goods_dict},是否结算？')
    buy_count = 0
    while buy_count<3:
        buy_inp = input('请输入Y/N：')
        if buy_inp != 'Y' and buy_inp != 'N':
            print('请重新输入')
            buy_count +=1
            continue
        if buy_inp == 'Y':
            print('结算成功！')
            return
        if buy_inp =='N':
            print('结算失败！请继续操作')
            return



def logout():
    """注销"""
    if user_lt == []:
        print('请先登录！')
        return
    else:
        user_lt.clear()
        print('注销成功！')
        return

func_dict = {
    '1': register,
    '2': login,
    '3': shopping,
    '4': shopping_cart,
    '5': logout
}
while True:
    print('*' * 50,
          """
                1 注册
                2 登录
                3 购物
                4 购物车结算
                5 注销
                q 退出\n""", '*' * 50)
    choose_inp = input('请选择功能：')
    if choose_inp == 'q':
        print('欢迎下次再来')
        break
    if choose_inp not in func_dict:
        print('请选择我们有的功能！')
        continue
    func_dict[choose_inp]()