fb_search.py

import urllib.request
import json
 
def search(texto):
  #pegue o access_token
  #em https://developers.facebook.com/tools/explorer
  url = 'https://graph.facebook.com/search?q='
  tail = '&type=post&access_token=<copie aqui o access_token>'
  resp = urllib.request.urlopen(url+texto+tail).read()
  data = json.loads(resp.decode('utf-8'))
  return data['data']
 
for resp in search('talkabit'):
  if 'message' in resp:
    print (resp['from']['name'] + ': ' + resp['message'] + '\n')