old_contents: import os.path
  import unittest
  
  
  def get_tests():
      start_dir = os.path.dirname(__file__)
      return unittest.TestLoader().discover(start_dir, pattern="*.py")
  
new_contents: import os.path
  import unittest
  
  
  def get_tests():
      return full_suite()
  
  def full_suite():
      from .resource import ResourceTestCase
      from .serializer import ResourceTestCase as SerializerTestCase
      from .utils import UtilsTestCase
  
      resourcesuite = unittest.TestLoader().loadTestsFromTestCase(ResourceTestCase)
      serializersuite = unittest.TestLoader().loadTestsFromTestCase(SerializerTestCase)
      utilssuite = unittest.TestLoader().loadTestsFromTestCase(UtilsTestCase)
  
      return unittest.TestSuite([resourcesuite, serializersuite, utilssuite])
  
  
subject: Update get_tests to be backwards compatible with Python 2.6, since the library is compatible it seems worth this extra effort to test against it.