code: def __getattr__(self, attr):
      try:
          value = super(AttrDict, self).__getitem__(attr)
      except KeyError:
          #  log.warn("%s attribute is not existed, return None" % attr)
          warnings.warn(
              "%s attribute is not existed, return None" % attr
          )
          value = None
      return value
  
imports: import sys
  import time
  import datetime
  import os
  import yaml
  import random
  import shutil
  import six
  import warnings
  import glob
  import numpy
label_desc: Use image node_id 3 for calling the AttrDict obj's underlying member method code with example usage: obj.__getattr__(attr) and returns: value