DAY6

flag = True
while flag:
    li = ["手机", "电脑", "鼠标垫", "游艇"]
    for i in li:
        print('{}\t\t{}'.format(li.index(i)+1,i))
    num_of_chioce = input('请输入选择的商品序号/输入Q或者q退出程序：')
    if num_of_chioce.isdigit():
        num_of_chioce = int(num_of_chioce)
        if num_of_chioce > 0 and num_of_chioce <= len(li):
            print(li[num_of_chioce-1])
        else:print('请输入有效数字')
    elif num_of_chioce.upper() == 'Q':break
    else:print('请输入数字')