import mechanize
import urllib2
import re

word_regex = re.compile("\/word\/([a-z]{4})\/")
response = urllib2.urlopen('http://www.scrabblefinder.com/4-letter-words/')
headers = response.info()
source = response.read()
#word_list = re.findall(word_regex, source)
word_list = ["poptarts", "booooaweifj"]

untaken_words = []
for word in word_list:
    response2 = urllib2.urlopen('http://www.neopets.com/petlookup.phtml?pet=%s', word)
    source2 = response2.read()
    if source2.find("Sorry, there is no Neopet by that name in Neopia.") != -1:
        untaken_words.append(word)

print untaken_words