def _on_open(self, sender, *args, **kwargs):
        """
        Internal handler for opening the device.
        """
        self.get_config()
        self.get_version()

        self.on_open()
def _on_open ( self , sender , * args , ** kwargs ) : self . get_config ( ) self . get_version ( ) self . on_open ( )
Internal handler for opening the device.