'str' object has no attribute 'decode' error

Question

The function below first decodes the hexadecimal number into a string and then the map function applies the ord function to all the decoded values and give us a tuple but this decode function is giving this error 'str' object has no attribute 'decode' :

def hex2rgb(hexcode):
    return tuple(map(ord, hexcode[1:].decode( )))

The code that I am writing is pertain to steganography here some part of the code which shows how the input to that function is generated:

binary = str2bin(message) + '1111111111111110' #converts string into binary and adds the delimeter at end to indicate message is ended

newData = [] #list to store the new pixels which contain the information

img = Image.open(filename)

if img.mode in ('RGBA'):
    img = img.convert('RGBA') #will convert the image into RGBA
    datas = img.getdata()  #will give all the pixel data
    digit = 0 #shows on which binary bit we are currently at      
    for item in datas:
        if (digit < len(binary)):
            newpix = encode(rgb2hex(item[0],item[1],item[2]),binary[digit])
            if newpix == None:
                newData.append(item)
            else:
                r, g, b = hex2rgb(newpix)
                newData.append((r,g,b,255))
                digit += 1

I don't understand why it is not decoding. I also tried .decode('hex') or .decode(hex) but it is still giving the error.

Answer 1

Your approach is incorrect. because you are trying to decode string that is already decoded. That's why the error is coming.