code: def notify(title, message, key, event=None, retcode=None):
      
  
      data = {
          'title': title if len(title) <= 20 else title[:19] + u'\u2026',
          'msg': message,
          'key': key
      }
  
      if event:
          data['event'] = event
  
      headers = {'User-Agent': USER_AGENT}
  
      endpoint = "https://api.simplepush.io"
  
      resp = requests.post(endpoint + '/send', data=data, headers=headers)
  
      resp.raise_for_status()
docs: Required paramter:
          * ``key`` - The Simplepush identification key, created by
          installing the Android App (https://simplepush.io)
  
      Optional parameters:
          * ``event`` - use custom ringtones and vibration patterns