(self)
return self._serial.is_open is True
Check if connection is open.

        Returns: boolean
Check if connection is open.
Check if connection is open .
async def is_open(self) -> bool:
        """
        Check if connection is open.

        Returns: boolean
        """
        return self._serial.is_open is True
async def is_open ( self ) -> bool : return self . _serial . is_open is True