Get last n lines of a file, similar to tail

Question

I\'m writing a log file viewer for a web application and for that I want to paginate through the lines of the log file. The items in the file are line based with the newest

Answer 1

The simplest way is to use deque:

from collections import deque

def tail(filename, n=10):
    with open(filename) as f:
        return deque(f, n)