import binascii

val = b"\x01\x0234"
ser = binascii.hexlify(val)
print (f"La variable val ({val}) occupe {len(val)} octets") # La variable val (b'\x01\x0234') occupe 4 octets
print (f"La variable ser ({ser}) occupe {len(ser)} octets") # La variable ser (b'01023334') occupe 8 octets