Mixing files and loops

Question

I\'m writing a script that logs errors from another program and restarts the program where it left off when it encounters an error. For whatever reasons, the developers of t

Answer 1

Assuming you need only one line, this could be of help

import itertools

def getline(fobj, line_no):
    "Return a (1-based) line from a file object"
    return itertools.islice(fobj, line_no-1, line_no).next() # 1-based!

>>> print getline(open("/etc/passwd", "r"), 4)
'adm:x:3:4:adm:/var/adm:/bin/false\n'

You might want to catch StopIteration errors (if the file has less lines).