new_contents: # testHelper.py
  
  # If you have a file like lab03Tests.py or lab04Tests.py with
  # so many tests that it gets confusing, this file can help you 
  # focus on just one function at a time.
  
  # See the comments at the bottom.
  
  import unittest
  
  def runTestsWithPrefix(testFile,prefix):
      """
      run only tests from testFile with a certain prefix
      Example: runTestsWithPrefix("lab03Tests.py","test_isPrimaryColor")
      """
      loader = unittest.TestLoader()
      loader.testMethodPrefix = prefix
      suite = loader.discover('.', pattern = testFile) 
      unittest.TextTestRunner(verbosity=2).run(suite)
  
  if __name__ == "__main__":
  
      # Change the parameters to runTestsWithPrefix as needed
      runTestsWithPrefix("lab03Tests.py","test_isSimpleNumeric")
  
  
subject: add testHelper.py