code: def test_skip_sample():
      num_samples = 500
      tar_file_path = os.path.join(
          get_dali_extra_path(), "db/webdataset/MNIST/missing.tar"
      )
      index_file = generate_temp_index_file(tar_file_path)
  
      extract_dir = generate_temp_extract(tar_file_path)
      equivalent_files = list(
          filter(
              lambda s: int(s[s.rfind("/") + 1 : s.rfind(".")])
              < 2500,  # noqa: 203
              sorted(
                  glob(extract_dir.name + "/*"),
                  key=lambda s: int(s[s.rfind("/") + 1 : s.rfind(".")]),
              ),  # noqa: 203
          )
      )
  
      compare_pipelines(
          webdataset_raw_pipeline(
              tar_file_path,
              index_file.name,
              ["jpg", "cls"],
              missing_component_behavior="skip",
              batch_size=test_batch_size,
              device_id=0,
              num_threads=1,
          ),
          file_reader_pipeline(
              equivalent_files,
              ["jpg", "cls"],
              batch_size=test_batch_size,
              device_id=0,
              num_threads=1,
          ),
          test_batch_size,
          math.ceil(num_samples / test_batch_size),
      )
      wds_pipeline = webdataset_raw_pipeline(
          tar_file_path,
          index_file.name,
          ["jpg", "cls"],
          missing_component_behavior="skip",
          batch_size=test_batch_size,
          device_id=0,
          num_threads=1,
      )
      wds_pipeline.build()
      assert_equal(
          list(wds_pipeline.epoch_size().values())[0], num_samples
      )
  
imports: import os
  from glob import glob
  import math
  import nvidia.dali
  from test_utils import compare_pipelines, get_dali_extra_path
  from nose_utils import assert_raises
  from nose.tools import assert_equal
  from webdataset_base import generate_temp_extract, generate_temp_index_file, webdataset_raw_pipeline, file_reader_pipeline
  from webdataset_base import test_batch_size
label_desc: Use image node_id 2 for calling a global function with example usage: test_skip_sample() without return types