Finds who among your Facebook friends you have the most common interests and likes with

facebook.py

#!/usr/bin/python -tt
# MIT licensed by Abraham Williams - http://abrah.am
# Pulls your Facebook friends likes and interest and finds who you have the most in common with.

import urllib, json, sys

graph_url = 'https://graph.facebook.com/'

def print_intersect_count(access_token):
  tally = {}
  my_likes_and_interests = []
  me = get_and_decode_graph_url(graph_url + '/me?fields=likes,interests,friends&access_token=' + access_token)
  if 'error' in me:
    print me['error']['message']
    sys.exit(1)
  for item in me['interests']['data'] and me['likes']['data']:
    my_likes_and_interests.append(item['id'])
  friends = []
  for friend in me['friends']['data']:
    friends.append(friend['id'])
  for x in range(0, len(friends) / 100 + 1):
    print '...'
    if len(friends) / 100 == x: final = -1 
    else: final = x * 100 + 100
    friends_ids = ','.join(friends[x * 100: final])
    friends_likes = get_and_decode_graph_url(graph_url + '/likes?ids=' + friends_ids + '&access_token=' + access_token)
    friends_interests = get_and_decode_graph_url(graph_url + '/interests?ids=' + friends_ids + '&access_token=' + access_token)
    for fuid in friends_likes and friends_interests:
      for item in friends_likes[fuid]['data']:
        if item['id'] in my_likes_and_interests:
          if fuid in tally:
            tally[fuid] += 1
          else:
            tally[fuid] = 1
  winner = sorted(tally, key=tally.get)[-1]
  for friend in me['friends']['data']:
    if friend['id'] == winner:
      name = friend['name']
  print 'You have %s interests and likes in common with %s.' % (tally[winner], name)

def get_and_decode_graph_url(url):
  response = urllib.urlopen(url)
  if response:
    return json.load(response)
  return False

def main():
  if len(sys.argv) != 3:
    print 'Usage: python interests.py --access_token "access_token"'
    print 'You can find an access_token on the /me/friends URL from http://developers.facebook.com/docs/api.'
    sys.exit(1)
  if sys.argv[1] == '--access_token':
    print 'Calculating...'
    print_intersect_count(sys.argv[2])
  else:
    print 'unknown option: ' + sys.argv[1]
    sys.exit(1)

if __name__ == '__main__':
  main()