@property
    def dsr(self):
        """Read terminal status line: Data Set Ready"""
        if self.logger:
            self.logger.info((self._dtr_state,) % 'DSR -> state of DTR (%r)')
        return self._dtr_state
dataset/ETHPy150Open pyserial/pyserial/serial/urlhandler/protocol_loop.py/Serial.dsr/swapped operands of `%`