Wake-On-Lan with Python 3.x

Example that works with python 3.x in ActiveState Code recipes collection:

 #!/usr/bin/env > # wol.py

  #

  # This module is from ActiveState Code Recipes:

  # http://code.activestate.com/recipes/358449-wake-on-lan/

  # and patched for Python 3 with:

  # http://code.activestate.com/recipes/577609-wake-on-lan-for-python-3/

  #

  # Example:

  # import wol

  # wol.wake_on_lan('70:F3:95:15:00:B5')

  #

import socket

import struct

  

def wake_on_lan(macaddress):

     """ Switches on remote computers using WOL. """

     

     # Check macaddress format and try to compensate

     if len (macaddress) = = 12 :

         pass

     elif len (macaddress) = = 12 + 5 :

         sep = macaddress[ 2 ]

         macaddress = macaddress.replace(sep,'')

     else :

         raise ValueError( 'Incorrect MAC address format' )

         

         

     # Pad the synchronization stream

     data = b 'FFFFFFFFFFFF' + (macaddress * 20 ).encode()

     send_data = b''

     

     # Split up the hex values in pack

     for i in range ( 0 , len (data), 2 ):

         send_data + = struct.pack( 'B' , int (data[i: i + 2 ], 16 ))

     

     # Broadcast it to the LAN

     sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

     sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1 )

     sock.sendto(send_data, ( '255.255.255.255' , 7 ))