diff -Naur grpc-1.26.0-original/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py grpc-1.26.0/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
--- grpc-1.26.0-original/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py	2019-12-17 20:29:27.000000000 -0500
+++ grpc-1.26.0/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py	2021-03-15 09:15:08.419558680 -0400
@@ -235,8 +235,7 @@
 
     def setUp(self):
         self._thread_pool = thread_pool.RecordingThreadPool(max_workers=None)
-        super(HealthServicerTest, self).start_server(
-            non_blocking=True, thread_pool=self._thread_pool)
+        super().start_server(non_blocking=True, thread_pool=self._thread_pool)
 
     def test_check_empty_service(self):
         request = health_pb2.HealthCheckRequest()
@@ -273,8 +272,7 @@
 class HealthServicerBackwardsCompatibleWatchTest(BaseWatchTests.WatchTests):
 
     def setUp(self):
-        super(HealthServicerBackwardsCompatibleWatchTest, self).start_server(
-            non_blocking=False, thread_pool=None)
+        super().start_server(non_blocking=False, thread_pool=None)
 
 
 if __name__ == '__main__':