Error writing data in inertial sensor

I have managed to read the calibration values of the sensor and save them in a file.

The problem I have is when I want to insert these values into the sensor, it throws some errors that I can not explain why I put the script and your help will be very useful

archivo = open("data.txt","r")

data1= archivo.readline()
data = list(data1.split())  #
print ("longitud de data =", len(data))
print ("tipo de dato =", type(data))
bno.set_calibration(data)
print(" Se a grabado exitosamente la calibracion al BNO055")
archivo.close()

The error you give me is

Traceback (most recent call last):
  File "menuV3.py", line 168, in <module>
    bno.set_calibration(data)
  File "/home/pi/Adafruit_BNO055/BNO055.py", line 554, in set_calibration
    self._write_bytes(ACCEL_OFFSET_X_LSB_ADDR, data)
  File "/home/pi/Adafruit_BNO055/BNO055.py", line 290, in _write_bytes
    command[4:] = map(lambda x: x & 0xFF, data)
  File "/home/pi/Adafruit_BNO055/BNO055.py", line 290, in <lambda>
    command[4:] = map(lambda x: x & 0xFF, data)
TypeError: unsupported operand type(s) for &: 'str' and 'int'

Here I show you what the bno.set_calibration (data) function does

def set_calibration(self, data):
    """Set the sensor's calibration data using a list of 22 bytes that
    represent the sensor offsets and calibration data.  This data should be
    a value that was previously retrieved with get_calibration (and then
    perhaps persisted to disk or other location until needed again).
    """
    # Check that 22 bytes were passed in with calibration data.
    if data is None or len(data) != 22:
        raise ValueError('Expected a list of 22 bytes for calibration data.')
    # Switch to configuration mode, as mentioned in section 3.10.4 of datasheet.
    self._config_mode()
    # Set the 22 bytes of calibration data.
    self._write_bytes(ACCEL_OFFSET_X_LSB_ADDR, data)
    # Go back to normal operation mode.
    self._operation_mode()

Finally I show you the function write_bytes

def _write_byte(self, address, value, ack=True):
    # Write an 8-bit value to the provided register address.  If ack is True
    # then expect an acknowledgement in serial mode, otherwise ignore any
    # acknowledgement (necessary when resetting the device).
    if self._i2c_device is not None:
        # I2C write.
        self._i2c_device.write8(address, value)
    else:
        # Build and send serial register write command.
        command = bytearray(5)
        command[0] = 0xAA  # Start byte
        command[1] = 0x00  # Write
        command[2] = address & 0xFF
        command[3] = 1     # Length (1 byte)
        command[4] = value & 0xFF
        resp = self._serial_send(command, ack=ack)
        # Verify register write succeeded if there was an acknowledgement.
        if ack and resp[0] != 0xEE and resp[1] != 0x01:
            raise RuntimeError('Register write error: 0x{0}'.format(binascii.hexlify(resp)))