打印到文件的倒数第二行 [英] Printing to the penultimate line of a file

问题描述

我想知道是否有一种简单的方法可以到达打开文件的倒数第二行. f.seek给我带来了无尽的麻烦.我可以很容易地到达最后一行，但是我不知道如何到达最后一行.

I am wondering if there is a simple way to get to the penultimate line of an open file. f.seek is giving me no end of trouble. I can easily get to the final line, but I can't figure out how to get to the line above that.

推荐答案

假设文件不是太大，并且内存不是问题

Assuming the file isn't too big and memory isn't a concern

open('file.txt').readlines()[-2]

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