我有一个文本文件 Hello, how are you? \n\n\n .
Hello, how are you? \n\n\n
我想附加 I am Sam. 最后两个 \n 移除。
I am Sam.
\n
结果语句应该是 Hello, how are you? \nI am Sam.
Hello, how are you? \nI am Sam.
在python中是如何做到的?
谢谢