code: def hidden_attr(attr_name):
      return "__" + attr_name
  
imports: import os
  import inspect
  from datetime import datetime
  from abc import ABCMeta
  import json
  import pydoc
  import numpy
  import numpydoc
  from numpydoc import docscrape
  import copy
label_desc: Use image node_id 1 for calling the BaseMeta obj's underlying member method code with example usage: obj.hidden_attr(attr_name) and returns: unknown