log_status = Falsef = open("info", "r", encoding="utf8")source = f.read()source = eval(source)username = ""def info_match(f_para_info):    username = input("type your ID：")    password = int(input("type your password："))    global source    if username == source[f_para_info]["name"] and password == source[f_para_info]["password"]:        print("login successful")        global log_status        log_status = True    else:        print("login failed")def para_decorator(f_para_pd):    def decorator(f_para_dec):        def func():            if log_status == True:                global source                sf = source[f_para_pd]["name"]                print("welcome user {kk}".format(kk=sf))                f_para_dec()            if log_status == False:                if f_para_pd == "jingdong":                    info_match(f_para_pd)                    f_para_dec()                elif f_para_pd == "weixin":                    info_match(f_para_pd)                    f_para_dec()                elif f_para_pd == "qq":                    info_match(f_para_pd)                    f_para_dec()        return func    return decorator@para_decorator("jingdong")  # homepage=para_decorator("jingdong")(homepage)def homepage():    print("welcome to home...")@para_decorator("weixin")def finance_page():    print("welcome to finance")@para_decorator("qq")def bookstore():    print("enjoy to the sea of knowledge")print("welcome to jd.com".center(60,"*"))while True:    print(‘‘‘    1.homepage （账号：ccc 密码：123）    2.finance_page（账号：gaga 密码：456）    3.bookstore（账号：xiaomu 密码：789）    4.quit to jd    ‘‘‘    )    switch = int(input("switch to ..."))    if switch == 1:        homepage()    elif switch == 2:        finance_page()    elif switch == 3:        bookstore()    elif switch == 4:        break