code: def __hash__(self):
      if self.__hash is None:
          self.__hash = hash(str(self))
      return self.__hash
  
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 4 for calling the compatbytes obj's underlying member method code with example usage: obj.__hash__() and returns: self