code: def __iter__(self):
      self.i = 0
      return self
  
file_path: DALI/dali/test/python/operator_1/test_jpeg_compression_distortion.py
imports: from nvidia.dali import pipeline_def
  import nvidia.dali.fn
  import nvidia.dali.types
  from random import shuffle
  import numpy
  from test_utils import as_array
  import os
  import cv2
label_desc: Use image node_id 3 for calling the InputImagesIter obj's underlying member method code with example usage: obj.__iter__() and returns: self