Upgrade yapf to 0.20.0

Upgrade yapf version to 0.20.0 and reformat Python files.

7 files changed, 43 insertions, 23 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)
diff --git a/examples/python/multiplex/multiplex_client.py b/examples/python/multiplex/multiplex_client.py
index 49713f35b7..9baa10247d 100644
--- a/examples/python/multiplex/multiplex_client.py
+++ b/examples/python/multiplex/multiplex_client.py
@@ -46,9 +46,9 @@ def guide_get_one_feature(route_guide_stub, point):
 
 
 def guide_get_feature(route_guide_stub):
-    guide_get_one_feature(
-        route_guide_stub,
-        route_guide_pb2.Point(latitude=409146138, longitude=-746188906))
+    guide_get_one_feature(route_guide_stub,
+                          route_guide_pb2.Point(
+                              latitude=409146138, longitude=-746188906))
     guide_get_one_feature(route_guide_stub,
                           route_guide_pb2.Point(latitude=0, longitude=0))
 
@@ -101,8 +101,8 @@ def generate_messages():
 def guide_route_chat(route_guide_stub):
     responses = route_guide_stub.RouteChat(generate_messages())
     for response in responses:
-        print("Received message %s at %s" %
-              (response.message, response.location))
+        print("Received message %s at %s" % (response.message,
+                                             response.location))
 
 
 def run():
diff --git a/examples/python/multiplex/multiplex_server.py b/examples/python/multiplex/multiplex_server.py
index e2ff671f97..70dec3c939 100644
--- a/examples/python/multiplex/multiplex_server.py
+++ b/examples/python/multiplex/multiplex_server.py
@@ -124,8 +124,8 @@ def serve():
     server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
     helloworld_pb2_grpc.add_GreeterServicer_to_server(_GreeterServicer(),
                                                       server)
-    route_guide_pb2_grpc.add_RouteGuideServicer_to_server(_RouteGuideServicer(),
-                                                          server)
+    route_guide_pb2_grpc.add_RouteGuideServicer_to_server(
+        _RouteGuideServicer(), server)
     server.add_insecure_port('[::]:50051')
     server.start()
     try:
diff --git a/examples/python/multiplex/run_codegen.py b/examples/python/multiplex/run_codegen.py
index d960c3cf16..be8915fe20 100644
--- a/examples/python/multiplex/run_codegen.py
+++ b/examples/python/multiplex/run_codegen.py
@@ -15,7 +15,17 @@
 
 from grpc_tools import protoc
 
-protoc.main(('', '-I../../protos', '--python_out=.', '--grpc_python_out=.',
-             '../../protos/helloworld.proto',))
-protoc.main(('', '-I../../protos', '--python_out=.', '--grpc_python_out=.',
-             '../../protos/route_guide.proto',))
+protoc.main((
+    '',
+    '-I../../protos',
+    '--python_out=.',
+    '--grpc_python_out=.',
+    '../../protos/helloworld.proto',
+))
+protoc.main((
+    '',
+    '-I../../protos',
+    '--python_out=.',
+    '--grpc_python_out=.',
+    '../../protos/route_guide.proto',
+))
diff --git a/examples/python/route_guide/route_guide_client.py b/examples/python/route_guide/route_guide_client.py
index c9d0e96ad6..f2d4317ef1 100644
--- a/examples/python/route_guide/route_guide_client.py
+++ b/examples/python/route_guide/route_guide_client.py
@@ -43,8 +43,9 @@ def guide_get_one_feature(stub, point):
 
 
 def guide_get_feature(stub):
-    guide_get_one_feature(
-        stub, route_guide_pb2.Point(latitude=409146138, longitude=-746188906))
+    guide_get_one_feature(stub,
+                          route_guide_pb2.Point(
+                              latitude=409146138, longitude=-746188906))
     guide_get_one_feature(stub, route_guide_pb2.Point(latitude=0, longitude=0))
 
 
@@ -94,8 +95,8 @@ def generate_messages():
 def guide_route_chat(stub):
     responses = stub.RouteChat(generate_messages())
     for response in responses:
-        print("Received message %s at %s" %
-              (response.message, response.location))
+        print("Received message %s at %s" % (response.message,
+                                             response.location))
 
 
 def run():
diff --git a/examples/python/route_guide/route_guide_server.py b/examples/python/route_guide/route_guide_server.py
index 46f3322a39..f10008fdec 100644
--- a/examples/python/route_guide/route_guide_server.py
+++ b/examples/python/route_guide/route_guide_server.py
@@ -113,8 +113,8 @@ class RouteGuideServicer(route_guide_pb2_grpc.RouteGuideServicer):
 
 def serve():
     server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-    route_guide_pb2_grpc.add_RouteGuideServicer_to_server(RouteGuideServicer(),
-                                                          server)
+    route_guide_pb2_grpc.add_RouteGuideServicer_to_server(
+        RouteGuideServicer(), server)
     server.add_insecure_port('[::]:50051')
     server.start()
     try:
diff --git a/examples/python/route_guide/run_codegen.py b/examples/python/route_guide/run_codegen.py
index 1ec7fcd51f..8df562d349 100644
--- a/examples/python/route_guide/run_codegen.py
+++ b/examples/python/route_guide/run_codegen.py
@@ -15,5 +15,10 @@
 
 from grpc_tools import protoc
 
-protoc.main(('', '-I../../protos', '--python_out=.', '--grpc_python_out=.',
-             '../../protos/route_guide.proto',))
+protoc.main((
+    '',
+    '-I../../protos',
+    '--python_out=.',
+    '--grpc_python_out=.',
+    '../../protos/route_guide.proto',
+))