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))