"""import osimport jsonfrom datetime import datetime

USER_STATUS = FalseUSER_COUNT = {}SHOPPING_CAR = {}

def decorate(arg):

    def inner():        if not USER_STATUS:            print('请先登陆后再查看!')            return        arg()        return

    return inner

def register():    while 1:        username = input('注册用户名:')        with open('8login.txt', 'r', encoding='utf-8') as f:            register1 = True            for line in f:                if line.split('----')[0].strip() == username:                    register1 = False                    print('帐户已存在!')                    break            if not register1:                break        pwd = input('密码:')        sj = datetime.now().strftime('%Y-%m-%d %H:%M:%S')        msg = '----'.join([username, pwd, sj, '0'])        with open('8login.txt', 'a', encoding='utf-8') as f:            f.write(msg + '\n')        print('注册成功!')        return

def login():    while 1:        username = input('用户名:')        with open('8login.txt', 'r', encoding='utf-8') as f:            status = False            for line in f:                if line.split('----')[0] == username:                    if line.split('----')[-1].strip() == '3':                        print('帐户已锁定!')                        return                    status = True                    break

            if not status:                print('用户不存在!')                return        pwd = input('密码:')        with open('8login.txt', 'r', encoding='utf-8') as f:            for line in f:                if line.split('----')[0] == username and line.split('----')[1] == pwd:                    USER_COUNT[username] = 0                    print('登陆成功')                    global USER_STATUS                    USER_STATUS = username                    return        if USER_COUNT.get(username) == None:            USER_COUNT[username] = 0        if USER_COUNT[username] < 3:            USER_COUNT[username] += 1            if not USER_COUNT[username] < 3:                with open('8login.txt', 'r', encoding='utf-8') as f1, \                        open('8login(改).txt', 'w', encoding='utf-8') as f2:                    for line in f1:                        if line.split('----')[0] == username:                            new_line = line.replace('0', '3')                            f2.write(new_line)                        else:                            f2.write(line)                os.remove('8login.txt')                os.rename('8login(改).txt', '8login.txt')                print('输入错误超过3次,锁定账号!')                return            print('登录失败请重试!')

@decoratedef goods():    f = open('8商品列表', 'r', encoding='utf-8')    a = f.read()    lst = a.split('\n')    max_page, end = divmod(len(lst), 3)  # 最大页,最后一页条数(总条数,每页条数)    if end > 0:        max_page += 1    x, y, z = 0, 3, 1    while 1:        if y > len(lst):            y = len(lst)        for i in range(x, y):            print(lst[i])        print('当前第%s页,共%s页.' % (z, max_page))        user = input('请输入序号加入到购物车,Y/y进入下一页,N/n退出:')        if user.upper() == 'N':            return '已退出'        elif user.upper() == 'Y':            x += 3            y += 3            z += 1            if y == len(lst) + 3:                x, y, z = 0, 3, 1            continue        elif user.isdigit():            pand = False            f = open('8商品列表', 'r', encoding='utf-8')            for line in f:                cut = line.split('|')                if user == cut[0]:                    pand = True                    if SHOPPING_CAR.get(cut[1]) == None:                        SHOPPING_CAR[cut[1]] = 0                    break            if not pand:                print('输入错误!')                continue            while 1:                count = input('请选择数量:')                if not count.isdigit():                    print('请输入阿拉伯数字!')                    continue                SHOPPING_CAR[cut[1]] += int(count)                date = datetime.now().strftime('%Y-%m-%d-%H-%M')                global USER_STATUS                dir_path = os.path.exists('shopping_car\\%s' % USER_STATUS)                if not dir_path:                    os.mkdir('shopping_car\\%s' % USER_STATUS)                with open("shopping_car\\%s\\%s.txt" % (USER_STATUS, date), 'w', encoding='utf-8') as f:                    up = json.dumps(SHOPPING_CAR, ensure_ascii=False)                    f.write(up)                    break

            print('已添加进购物车!')            print(SHOPPING_CAR)

        else:            print('输入有误!')

@decoratedef shopping_car():    if not os.path.exists('shopping_car\\%s' % USER_STATUS):        print('您的购物车是空的,快去购买吧!')        return    content = os.walk('shopping_car\\%s' % USER_STATUS)    for a, b, c in content:        for x in c:            print(x)            f = open('shopping_car\\%s\\%s' % (USER_STATUS, x), 'r', encoding='utf-8')            for line in f:                a = json.loads(line)                for item in a:                    f = open('8商品列表', 'r', encoding='utf-8')                    ls = f.read().split('\n')                    for lm in ls:                        if lm.split('|')[1] == item:                            price = lm.split('|')[2]                    print('    %s|%s|%s个' % (item,price , a[item]))

    return

def main():    '''    主页面    :return:    '''    dic = {'1': register, '2': login, '3': goods, '4': shopping_car}    while 1:        print('''*****欢迎来到沙河商城!*****1.注册帐户2.登陆帐户3.浏览商品4.查看购物车''')        a = input('请选择(N/n退出):')        if a.upper() == 'N':            return        if dic.get(a) == None:            print('输入有误!')            continue        dic.get(a)()

main()"""