code: def save(filepath, obj):
      """Saves an object to the specified filepath using joblib.
  
      joblib is like pickle but will save NumPy arrays as separate files for
      greater efficiency.
  
      :param filepath: str, path to save to
      :obj filepath: object to save
      """
  
      joblib.dump(obj, filepath)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import warnings
  import joblib
  import tensorflow
  from cleverhans.model import Model
  from cleverhans.utils import ordered_union
  from cleverhans.utils import safe_zip
label_desc: Use image node_id 1 for calling a global function with example usage: save(filepath, obj) without return types