code: def write_byte(self, i2c_addr, value, force=None):
          
          self._set_address(i2c_addr, force=force)
          msg = i2c_smbus_ioctl_data.create(
              read_write=I2C_SMBUS_WRITE, command=value, size=I2C_SMBUS_BYTE
          )
          ioctl(self.fd, I2C_SMBUS, msg)
docs: Write a single byte to a device.
  
          :param i2c_addr: i2c address
          :type i2c_addr: int
          :param value: value to write
          :type value: int
          :param force:
          :type force: Boolean