code: def pixy_set_brightness(self, brightness):
          
          task = asyncio.ensure_future(self.core.pixy_set_brightness(brightness))
          self.loop.run_until_complete(task)
docs: Sends the setBrightness Pixy command.
          This method sets the brightness (exposure) of Pixy's camera.
  
          :param brightness: range between 0 and 255 with 255 being the
                             brightest setting
  
          :returns: No return value.