code: def _set_address(self, address, force=None):
          
          force = force if force is not None else self.force
          if self.address != address or self._force_last != force:
              if force is True:
                  ioctl(self.fd, I2C_SLAVE_FORCE, address)
              else:
                  ioctl(self.fd, I2C_SLAVE, address)
              self.address = address
              self._force_last = force
docs: Set i2c slave address to use for subsequent calls.
  
          :param address:
          :type address: int
          :param force:
          :type force: Boolean