use assert[Not]IsInstance where appropriate
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index fa16536..ae3b721 100644
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -132,7 +132,7 @@
self.assertTrue(current.is_alive())
self.assertTrue(not current.daemon)
- self.assertTrue(isinstance(authkey, bytes))
+ self.assertIsInstance(authkey, bytes)
self.assertTrue(len(authkey) > 0)
self.assertEqual(current.ident, os.getpid())
self.assertEqual(current.exitcode, None)