code: def __add__(self, value):
      assert isinstance(value, compatbytes)
      return compatbytes(bytearray.__add__(self, value))
  
imports: from __future__ import absolute_import, division, print_function
  import array
  import codecs
  import importlib
  import inspect
  import math
  import platform
  import re
  import sys
  import time
  from base64 import b64encode
  from collections import namedtuple
label_desc: Use image node_id 7 for calling the compatbytes obj's underlying member method code with example usage: obj.__add__(value) and returns: compatbytes