A python "port" of logcheck's logtail2.
Pygtail reads log file lines that have not been read. It will even handle log files that have been rotated.
From the command line:
Usage: pygtail.py [options] logfile
Print log file lines that have not been read.
Options:
-h, --help show this help message and exit
-o OFFSET_FILE, --offset-file=OFFSET_FILE
File to which offset data is written (default:
<logfile>.offset).
-p, --paranoid Update the offset file every time we read a line
(as opposed to only when we reach the end of the
file).
--no-copytruncate Don't support copytruncate-style log rotation.
Instead, if the log file shrinks, print a warning.
In your code:
from pygtail import Pygtail
for line in Pygtail("some.log"):
sys.stdout.write(line)