Any idea to emulate tail -f

[Lawrence D'Oliveiro]

In message <mailman.5091.1241503147.11746.python-list at python.org>, Joel 
Juvenal Rivera Rivera wrote:

> I want to make something very similar to  the command tail -f (follow a
> file) ...

<http://codecodex.com/wiki/index.php?title=Monitoring_a_Log_File>