Unix Signal Handling through Python

I have a script that I need to have reset every few hours. To do this I am using some signal handling stuff.

First import the signal handling stuff
import signal

Then in the main function which traps the signal you would have:
signal.signal(signal.SIGUSR1, sighandler)

when the USR1 signal is issued the sighandler function is called. This function would look something like this:

def sighandler(signum, frame):
   print "Your resetting code here"

Now in the crontab you can put in code where you issue a
kill -USR1 pidofapp

Obviously you will have to save the processes PID to a file, so you can use it later.