Mac_Changer.py

import subprocess
import optparse
import re

def get_user_input():
    parse_object = optparse.OptionParser()
    parse_object.add_option("-i","--interface",dest="interface",help="interface to change!")
    parse_object.add_option("-m","--mac",dest="mac_address",help="new mac address")

    return parse_object.parse_args()

def change_mac_address(user_interface,user_mac_address):
    subprocess.call(["ifconfig",user_interface,"down"])
    subprocess.call(["ifconfig",user_interface,"hw","ether",user_mac_address])
    subprocess.call(["ifconfig",user_interface,"up"])

def control_new_mac(interface):
    ifconfig =subprocess.check_output(["ifconfig",interface])
    new_mac=re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w",ifconfig)

    if new_mac:
        return new_mac.group(0)
    else:
        return None
    

#python MacChanger.py -i eth0 -m 00:11:22:33:44:55
print("MyMacChanger started!")

(user_input,arguments) =get_user_input()

change_mac_address(user_input.interface,user_input.mac_address)
finalized_mac =control_new_mac(user_input.interface)

if finalized_mac == user_input.mac_address:
    print("Success")

else:
    print("Error!")