class_docstr: CfgNode represents an internal node in the configuration tree. It's a simple
  dict-like container that allows for attribute-based access to keys.
code: def __setattr__(self, name, value):
      self[name] = value
  
file_path: pfe-net/util/config.py
imports: import yaml
  import os
  from ast import literal_eval
  import copy
label_desc: Use image node_id 3 for calling the CfgNode obj's underlying member method code with example usage: obj.__setattr__(name, value) without return types