1 li = ["手机", "电脑", "鼠标垫", "游艇"]
 2 good = {}
 3 
 4 for i in li:
 5     goodid = str(li.index(i) + 1)
 6     print("{0}\t\t{1}".format(goodid, i))
 7     good[goodid] = i
 8 
 9 while True:
10     userInputId = input("请输入选择的商品序号: ")
11     if userInputId in good:
12         print(userInputId + ' ' + good.get(userInputId))
13         break
14     elif userInputId == 'Q' or userInputId == 'q':
15         exit()
16     else:
17         print("输入有误,请重新输入!")

 

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