Read from the last line of a file?

[Mike Rovner]

Anthony Liu wrote:
> I am wondering if it is possible to start reading from
> the last line of file, and then the last but one up to
> the first line.

If you can afford to keep the whole file in memory, than:

lines = open(..).readlines()
print lines[::-1]

Otherwise you can use seek() to random-access file and read chunks,
then extract lines from them and process them.
See http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/120686 for 
implementation details.

Mike