code: def main(_):
      """Run the sample attack"""
      batch_shape = [
          FLAGS.batch_size,
          FLAGS.image_height,
          FLAGS.image_width,
          3,
      ]
      for filenames, images in load_images(
          FLAGS.input_dir, batch_shape
      ):
          save_images(images, filenames, FLAGS.output_dir)
  
file_path: cleverhans/cleverhans_v3.1.0/examples/nips17_adversarial_competition/dev_toolkit/sample_attacks/noop/attack_noop.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import numpy
  from scipy.misc import imread
  from scipy.misc import imsave
  import tensorflow
label_desc: Use image node_id 3 for calling a global function with example usage: main(_) without return types