1 files changed, 8 insertions, 4 deletions
diff --git a/examples/python/interceptors/headers/header_manipulator_client_interceptor.py b/examples/python/interceptors/headers/header_manipulator_client_interceptor.py
index ac7c605144..89b1bef05f 100644
--- a/examples/python/interceptors/headers/header_manipulator_client_interceptor.py
+++ b/examples/python/interceptors/headers/header_manipulator_client_interceptor.py
@@ -20,9 +20,10 @@ import generic_client_interceptor
 
 
 class _ClientCallDetails(
-        collections.namedtuple('_ClientCallDetails',
-                               ('method', 'timeout', 'metadata',
-                                'credentials')), grpc.ClientCallDetails):
+        collections.namedtuple(
+            '_ClientCallDetails',
+            ('method', 'timeout', 'metadata', 'credentials')),
+        grpc.ClientCallDetails):
     pass
 
 
@@ -33,7 +34,10 @@ def header_adder_interceptor(header, value):
         metadata = []
         if client_call_details.metadata is not None:
             metadata = list(client_call_details.metadata)
-        metadata.append((header, value,))
+        metadata.append((
+            header,
+            value,
+        ))
         client_call_details = _ClientCallDetails(
             client_call_details.method, client_call_details.timeout, metadata,
             client_call_details.credentials)