#__author__:"Jay guo"#__date__:2016/9/8login_flag = Falsedef login(flag):    def func(f):        def inner():            global login_flag            if login_flag == False:                nameuser = input("input your name:> ")                print (nameuser)                passwd = input ("input your password: > ")                print (passwd)                if flag == "jingdong":                    # 打开文件                   with open("jingdong","r") as file:                       for i in file:                           i = eval(i)                           if nameuser ==list(i.keys())[0] and passwd == i[list(i.keys())[0]]:                                print ("welcome jingdong")                                login_flag = True                elif flag == "weixin":                    with open("weixin", "r") as file:                        for i in file:                            i = eval(i)                            if nameuser == list(i.keys())[0] and passwd == i[list(i.keys())[0]]:                                print("welcome weixin")                                login_flag = True            f()        return inner    return func@login("jingdong")def home():    print ("input home")@login("weixin")def finance():    print ("input finance")@login("jingdong")def book():    print ("input book")def home_goods(flag):#商品    goods_list= []    shop_list = ("car", "competer", "water")    finance_list = ("stock","loan","buy")    book_list = ("十万个为什么","西游记","三国演义")    list1 = [shop_list,finance_list,book_list]    while True:        for i,j in enumerate(list1[flag-1],1):            print(i,":",j)        choice = input("input goods number（q : quit） :> ")        if choice == "q":            break        print (list1[flag-1][int(choice)-1])        goods_list.append(list1[flag-1][int(choice)-1])    return goods_listlist_paper = ("home","finance","book")home_shop = []finance_shop = []book_shop = []while True:  for i,j in enumerate(list_paper,1):      print (i,":",j)  shop = input("choice paper:>")  if shop == "q":      for i in home_shop:          print(i)      for i in finance_shop:          print(i)      for i in book_shop:          print(i)      break  elif int(shop) == 1:     home()     home_shop = home_goods(1)  elif int(shop) == 2:     finance()     finance_shop = home_goods(2)  elif int(shop) == 3:     book()     book_shop =home_goods(3)