def get_user_followers(username):
"""
Retrieves data on all followers of targetted account.
WARNING: There may be hundreds of thousands or millions of followers
Be sure you want this data before using this function!
"""
  import pdb; pdb.set_trace()
  api = oauth_authenticate()
  datestamp = str(datetime.datetime.now().strftime("%Y-%m-%d"))
  target = api.get_user(screen_name = username)
  target_id = target.id
  next_cursor = -1
  index = 0
  followersdata = {}
  while next_cursor:
      try:
          for x in limit_handled(tweepy.Cursor(api.followers, screen_name = username).items()):
            followersdata[index] = {}
            followersdata[index]['screen_name'] = x._json['screen_name']
            followersdata[index]['id_str'] = x._json['id_str']
            followersdata[index]['name'] = x._json['name']
            followersdata[index]['description'] = x._json['description']
            followersdata[index]['targeted_user_id'] = target_id
            index = index + 1
            next_cursor = x._json["next_cursor"]
      except (TweepError, ConnectionError) as exc:
          print(exc)
          print("Waiting 15 minutes for next API window to open")
          print("Current Time is:", time.strftime("%I:%M:%S"))
          time.sleep(60*15)
          del api
          api = oauth_authenticate()
          continue
    followersDF = pd.DataFrame.from_dict(followersdata, orient = "index")
    followersDF.to_csv("%s-%s followers list.csv" % (username, datestamp),
                           index = False, encoding = 'latin-1')