code: def test_cntk_201a_cifar_10_dataloader_noErrors(clean_data, nb):
      if os.getenv("OS") == "Windows_NT" and sys.version_info[0] == 2:
          pytest.skip(
              "tests with Python 2.7 on Windows are not stable in the CI environment. "
          )
      errors = [
          output
          for cell in nb.cells
          if "outputs" in cell
          for output in cell["outputs"]
          if output.output_type == "error"
      ]
      assert errors == []
      assert os.path.exists(datadir)
  
file_path: CNTK/Tests/EndToEndTests/CNTKv2Python/Tutorials/CNTK_201A_CIFAR-10_DataLoader_test.py
imports: import os
  import re
  import numpy
  import sys
  import pytest
  import shutil
label_desc: Use image node_id 2 for calling a global function with example usage: test_cntk_201a_cifar_10_dataloader_noErrors(clean_data, nb) without return types