  
  from django.test import SimpleTestCase
  from django.test.runner import RemoteTestResult
  
  try:
      import tblib
  except ImportError:
 
</s> remove         self.assertEqual(repr(event[3][1]), "AssertionError('2 != 1',)")
 </s> add         self.assertEqual(repr(event[3][1]), "AssertionError('2 != 1'%s)" % trailing_comma) </s> remove         self.assertEqual(repr(event[3][1]), "AssertionError('0 != 1',)")
 </s> add         trailing_comma = '' if PY37 else ','
        self.assertEqual(repr(event[3][1]), "AssertionError('0 != 1'%s)" % trailing_comma)
from django.utils.version import PY37
  
  from django.test import SimpleTestCase
  from django.test.runner import RemoteTestResult
from django.utils.version import PY37
  
  try:
      import tblib
  except ImportError:
keep keep add keep keep keep keep
 Refs #28814 -- Fixed test_runner failure on Python 3.7.

Due to https://bugs.python.org/issue30399. 
tests/test_runner/test_parallel.py