如何在用户输入的末尾添加.txt？

Question

我需要在用户输入的末尾添加.txt，但我不确定它必须放在[q]输入的末尾才能完成我的作业。

FF = input("What Would You Like To Save Your Encription As?: "[q])

Answer 1

像这样：

FF = input("What Would You Like To Save Your Encription As?: ")
FF = FF + ".txt"

Answer 2

您也可以使用格式：

FF = input("What Would You Like To Save Your Encription As?: ")
FF1 = '{0}.txt'.format(FF)