UNIX password cracker

#!/usr/bin/env python

import crypt

        def testPass(cryptPass):
                salt = cryptPass[0:2]
                dictFile = open('dictionary.txt','r')

for word in dictFile.readlines():
     word = word.strip('\n')
    cryptWord = crypt.crypt(word,salt)

if (cryptWord == cryptPass):
 print "[+] Found Password: "+word+"\n"
 return
print "[-] Password Not Found.\n"
return

def main():
    passFile = open('passwords.txt')

for line in passFile.readlines():
    if ":" in line:
    user = line.split(':')[0]
    cryptPass = line.split(':')[1].strip(' ')
    print "[*] Cracking Password For: "+user
    testPass(cryptPass)

if __name__ == "__main__":
main()