code: def __init__(self, batch_size):
      self.batch_size = batch_size
  
imports: from nvidia.dali.pipeline import Pipeline
  import nvidia.dali
  import nvidia.dali.ops
  import nvidia.dali.plugin_manager
  import unittest
  import os
  import numpy
  import tempfile
label_desc: Use image node_id 1 to create a new ExternalInputIterator object from inherited base classes: object with example: obj = ExternalInputIterator(batch_size)