code: def cleanup(self):
          
          self.hide()
          self.clear()
  
          if self._leds is not None:
              self._ws.ws2811_fini(self._leds)
              self._ws.delete_ws2811_t(self._leds)
              self._leds = None
              self._channel = None
docs: Attempt to reset the device & switching it off prior to exiting the
          python process.