copy that text from your link into a file and call it /home/user/wol.py.

get the mac address for the machine you want to send the WOL request to and change the last line of the file to match...

WakeOnLan('0:3:93:81:68:b2')

whats in between the single quotes should be the mac of your machine.

when you have that done, execute the following line...

chmod 700 /home/user/wol.py

you may need to run this as root so you may need to have becomeroot installed. if the script errors out, you may need to execute the following line in conjunction with the chmod line above...

chown root:root /home/user/wol.py

EDIT: make sure this is the first line in the file...

#! /usr/bin/python