Python U3

I have a peripheral program (blender game engine 2.76) which I have worked on in another forum topic which successfully integrated LabJack with Blender2.76 whose python site-packages required Python3.4.3. Now I upgraded the easy commands from LabJackPython to be operable only on Python3 (not backwards compatible with Python2). However, I am need clarification on one line in u3.py. I am certain that this is only difficult since the % operator depreciated from Python2 to Python3 for byte operations. But I need to know what this line expects in as a type and what it needs to put out as a type.

Looking at the file the only lines needing change for u3.py to be fully Python3 compatible for the _DAC_ function is:::

        self.dac = Dac
        self.value = Value
        self.cmdBytes = [ 38 + (Dac % 2), Value % 256, Value >> 8 ]

Just by switching to Python3 from Python2I was getting the error 'Type error: not all arguments converted during string formatting (u3.py) line 2379

Now I input a value (self.value).

#set DAC1 to DAC1_value after converting to hex (16bit ^4) from decimal
    DAC1_value=int(round(DAC1_value/10*65535,0))
    DAC1=str(hex(DAC1_value))
    print(DAC1)
    bytes = str.encode(DAC1)
    type(bytes) # insures its bytes
    print(bytes)
    u3d.getFeedback(u3.DAC16(Dac=0, Value=bytes))

When I implemented the above code changing to bytes, I was getting the error' Type error: unsupported operand type(s) for %: 'bytes' and 'int'

This again is the unsupported % depreciated movement to bytes ...in Python3.4.3? In the Python3.4.3 Idle, 2%256 gives 2 and 3%2 gives 1. What I need to do is use .format and encode commands to give this function the correct input and I need to edit this one line of code in u3.py and then my program will work.

u3.py says"

d.getFeedback(u3.DAC16(Dac = 0, Value = 0x5566))

It wants this format for Value (is that a bytes type b'0x5566' or just '0x5566')

In Python3.4.3,the codecs.encode( takes a b' ' and makes it hex value but not 0x0000 format

codecs.encode(b'64', 'hex')
b'3634'

That can be done (I think)

>>> str(hex(32768))
'0x8000'
>>> str.encode('0x8000')
b'0x8000'

Any help is more than appreciated. I cannot figure out what to put in the function to get it to work in Python3.4.3...bytes....hex....string....