Make YAPF happy

src/python/grpcio_tests/commands.py

@@ -192,7 +192,8 @@ class TestGevent(setuptools.Command):
     BANNED_WINDOWS_TESTS = (
         # TODO(https://github.com/grpc/grpc/pull/15411) enable this test
         'unit._dns_resolver_test.DNSResolverTest.test_connect_loopback',
-        'unit._channel_close_test.ChannelCloseTest',)
+        'unit._channel_close_test.ChannelCloseTest',
+    )
     description = 'run tests with gevent.  Assumes grpc/gevent are installed'
     user_options = []