MD5 Bruceforce

#!/usr/bin/python
#author : Darklest
#Title : Bruceforce MD5 with wordlist
#usage : python md5.py a71954b5ca89c7c07fa9a8e217e7b091
import hashlib, sys
f = open('pass.txt', 'r')
for i in f:
    passw = hashlib.md5(i.strip()).hexdigest()
    if sys.argv[1] == passw:
        print passw, '=', i
        exit()
print "Hash Not Found..."