code: def test_plenty_of_video_files():
      """
      checks if the readers.Video can handle more than OS max open file limit of opened files at once
      """
      # make sure that there is one sequence per video file
      pipe = VideoPipe(
          batch_size=BATCH_SIZE,
          data=PLENTY_VIDEO_FILES,
          step=1000000,
          sequence_length=1,
      )
      pipe.build()
      iters = math.ceil(
          len(os.listdir(PLENTY_VIDEO_DIRECTORY)) / BATCH_SIZE
      )
      for i in range(iters):
          print("Iter " + str(i))
          pipe.run()
  
imports: import os
  import math
  from test_utils import get_gpu_num
  from test_utils import get_dali_extra_path
  import nvidia.dali.ops
  import nvidia.dali.types
  from nvidia.dali.pipeline import Pipeline, pipeline_def
  import nvidia.dali.fn
  import numpy
  import tempfile
  from test_utils import check_output_pattern
  from nose_utils import assert_raises, raises
label_desc: Use image node_id 21 for calling a global function with example usage: test_plenty_of_video_files() without return types