code: def tweets_for_id(user_id, limit=1e10):
      
      # Map id to screen_name
      r = twapi.request('users/lookup', {'user_id': user_id})
      if r.status_code == 200:
          sname = [t for t in r][0]['screen_name']
          return tweets_for_user(sname, limit)
      else:
          sys.stderr.write('error: %s' % str(r))
docs: Collect the most recent 3200 tweets for this user_id, sleeping to deal with rate limits.