Python Whois Robot

whoisrobot.py

import itertools
import subprocess


archivo = open("disponibles","a")
for LENGTH in range(3,8):
    a = itertools.product("ABCDEFGHIJKLMNOPQRSTUVWXYZ",repeat=LENGTH)
    for each in a:
        domain = "".join(each)+".com"
        print domain
        pos = " ".join(subprocess.Popen(['whois', domain], stdout=subprocess.PIPE).stdout.readlines()).find("No match")
        if pos > -1:
            print "DISPONIBLE"
            archivo.write(domain+",DISPONIBLE\n")