CODEWITHSUNDEEP
pythonpython-3.xrosrospy
andres jimenez
andres jimenez

Reputation: 11

error python code: AttributeError: 'bytes' object has no attribute 'encode'

I'm all trying to pass a code from python2.7 to 3.8 but I'm stuck on the following code:

def serial_handle(self):
    # Serial initialization
    try:
        self.serial.reset_input_buffer()
        rospy.loginfo("Reaching for serial")
        rospy.loginfo("Here are the first 5 data readings ...")
        time.sleep(1)
        self.serial.reset_input_buffer()
        init_msg = self.serial.readline()
        for x in range(0, 5):
            #init_msg = self.serial.read(10)
            init_msg = self.serial.readline()
            rospy.loginfo( init_msg.encode('utf-8')[0:(len(init_msg)-1)] )
    except serial.serialutil.SerialException:
        rospy.logerr("Port timeout after %d seconds at: %s", self.timeout, self.device_port)
        self.serial.close
        sys.exit(0)
    
    # sent start signal
    self.serialOK = True
    self.serial.write( 'B'.encode('ascii') )
    time.sleep(0.08)        # for Arduino to reboot

because it always sends me this error:

Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/home/paloverde/dev_ros_encoders/src/serial_odom/script/v0.3/serial_odom.py", line 95, in serial_handle
    rospy.loginfo( init_msg.encode('utf-8')[0:(len(init_msg)-1)] )
AttributeError: 'bytes' object has no attribute 'encode'

Does anyone know what solution could be implemented for this?

Upvotes: 1

Views: 1248

Answers (1)

day
day

Reputation: 301

It looks like you have a byte string init_msg that you want to turn into a unicode string. You probably wanted to use decode instead of encode:

rospy.loginfo( init_msg.decode('utf-8')[0:(len(init_msg)-1)] )

Upvotes: 0

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