code: def freeze(self, freezed=True):
      self._freezed = freezed
      for v in self.__dict__.values():
          if isinstance(v, AttrDict):
              v.freeze(freezed)
  
file_path: tensorpack/examples/FasterRCNN/config.py
imports: import numpy
  import os
  import pprint
  import six
  from tensorpack.utils import logger
  from tensorpack.utils.gpu import get_num_gpu
label_desc: Use image node_id 7 for calling the AttrDict obj's underlying member method code with example usage: obj.freeze(freezed) without return types