old_contents: import os
  import sys
  import unittest
  
  REGRESSION_TEST_DIRNAME = 'regressiontests'
  REGRESSION_TEST_DIR = os.path.join(os.path.dirname(__file__), REGRESSION_TEST_DIRNAME)
  
  sys.path.insert(0, '../../')
  
  
  def load_suite_tests(only=None):
      only_module, only_test_case = None, None
      if only:
          args = only.split(".")
          only_module = args[0]
          only_test_case = args[1:] and args[1] or None
          only_function = args[2:] and args[2] or None
      suites = []
      for dirpath, dirnames, filenames in os.walk(REGRESSION_TEST_DIR):
          for f in filenames:
              basename, ext = os.path.splitext(f)
              if (ext == '.py') and (not only_module or (only_module == basename)):
                  modname = "%s.%s" % ('.'.join(dirpath.split('/')), basename)
                  package = __import__(modname, globals(), locals(), [], -1)
                  mod = sys.modules[modname]
                  if hasattr(mod, 'suite'):
                      suite = mod.suite()
                      if only_test_case:
                          suite._tests = [t for t in suite._tests
                                          if t.__class__.__name__ == only_test_case]
                          if only_function:
                              suite._tests = [t for t in suite._tests
                                              if t._testMethodName == only_function]
                      suites.append(suite)
      return suites
  
  
  if __name__ == '__main__':
      only = None
      if len(sys.argv) > 1:
          only = sys.argv[1]
      suites = load_suite_tests(only=only)
      suite = unittest.TestSuite(suites)
      unittest.TextTestRunner(verbosity=2).run(suite)
  
new_contents: import os
  import sys
  import unittest
  
  REGRESSION_TEST_DIRNAME = 'regressiontests'
  REGRESSION_TEST_DIR = os.path.join(os.path.dirname(__file__), REGRESSION_TEST_DIRNAME)
  
  sys.path.insert(0, '..')
  
  
  def load_suite_tests(only=None):
      only_module, only_test_case = None, None
      if only:
          args = only.split(".")
          only_module = args[0]
          only_test_case = args[1:] and args[1] or None
          only_function = args[2:] and args[2] or None
      suites = []
      for dirpath, dirnames, filenames in os.walk(REGRESSION_TEST_DIR):
          for f in filenames:
              basename, ext = os.path.splitext(f)
              if (ext == '.py') and (not only_module or (only_module == basename)):
                  modname = "%s.%s" % ('.'.join(dirpath.split('/')), basename)
                  package = __import__(modname, globals(), locals(), [], -1)
                  mod = sys.modules[modname]
                  if hasattr(mod, 'suite'):
                      suite = mod.suite()
                      if only_test_case:
                          suite._tests = [t for t in suite._tests
                                          if t.__class__.__name__ == only_test_case]
                          if only_function:
                              suite._tests = [t for t in suite._tests
                                              if t._testMethodName == only_function]
                      suites.append(suite)
      return suites
  
  
  if __name__ == '__main__':
      only = None
      if len(sys.argv) > 1:
          only = sys.argv[1]
      suites = load_suite_tests(only=only)
      suite = unittest.TestSuite(suites)
      unittest.TextTestRunner(verbosity=2).run(suite)
  
subject: Fix PYTHONPATH in runtests.py to actually import django_thumborstorage from dev source.