old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import unittest
  
  from test_dataset import TestDataSet
  from test_preprocess import TestPreProcess
  from test_utils import TestUtils
  
  
  def run_test():
      test_classes = [TestDataSet, TestPreProcess, TestUtils]
  
      loader = unittest.TestLoader()
      suites_list = []
  
      for test_class in test_classes:
          suite = loader.loadTestsFromTestCase(test_class)
          suites_list.append(suite)
  
      suites = unittest.TestSuite(suites_list)
  
      runner = unittest.TextTestRunner()
      runner.run(suites)
  
  if __name__ == '__main__':
      run_test()
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import unittest
  
  from test_utils import TestUtils
  
  
  def run_test():
      test_classes = [TestUtils]
  
      loader = unittest.TestLoader()
      suites_list = []
  
      for test_class in test_classes:
          suite = loader.loadTestsFromTestCase(test_class)
          suites_list.append(suite)
  
      suites = unittest.TestSuite(suites_list)
  
      runner = unittest.TextTestRunner()
      runner.run(suites)
  
  if __name__ == '__main__':
      run_test()
  
subject: Comment out test dataset and preprocess.