diff --git a/examples/python/helloworld/greeter_client_with_options.py b/examples/python/helloworld/greeter_client_with_options.py
index 8e9287c960c..1252b5fe547 100644
--- a/examples/python/helloworld/greeter_client_with_options.py
+++ b/examples/python/helloworld/greeter_client_with_options.py
@@ -35,8 +35,7 @@ def run():
         stub = services.GreeterStub(channel)
         # Timeout in seconds.
         # Please refer gRPC Python documents for more detail. https://grpc.io/grpc/python/grpc.html
-        response = stub.SayHello(
-            protos.HelloRequest(name='you'), timeout=10)
+        response = stub.SayHello(protos.HelloRequest(name='you'), timeout=10)
     print("Greeter client received: " + response.message)
 
 
diff --git a/examples/python/interceptors/default_value/greeter_client.py b/examples/python/interceptors/default_value/greeter_client.py
index f3ca960aeff..471c7db5726 100644
--- a/examples/python/interceptors/default_value/greeter_client.py
+++ b/examples/python/interceptors/default_value/greeter_client.py
@@ -18,8 +18,8 @@ import logging
 
 import grpc
 
-protos, services = grpc.protos_and_services("protos/helloworld.proto",
-                                            include_paths=["../../.."])
+protos, services = grpc.protos_and_services(
+    "protos/helloworld.proto", include_paths=["../../.."])
 import default_value_client_interceptor
 
 
diff --git a/examples/python/interceptors/headers/greeter_client.py b/examples/python/interceptors/headers/greeter_client.py
index bfe0bdb5929..2b0c14ae8c3 100644
--- a/examples/python/interceptors/headers/greeter_client.py
+++ b/examples/python/interceptors/headers/greeter_client.py
@@ -18,8 +18,8 @@ import logging
 
 import grpc
 
-protos, services = grpc.protos_and_services("protos/helloworld.protos",
-                                            include_paths=["../../.."])
+protos, services = grpc.protos_and_services(
+    "protos/helloworld.protos", include_paths=["../../.."])
 import header_manipulator_client_interceptor
 
 
diff --git a/examples/python/interceptors/headers/greeter_server.py b/examples/python/interceptors/headers/greeter_server.py
index ea5031811cd..a2c53638b7e 100644
--- a/examples/python/interceptors/headers/greeter_server.py
+++ b/examples/python/interceptors/headers/greeter_server.py
@@ -18,8 +18,8 @@ import logging
 
 import grpc
 
-protos, services = grpc.protos_and_services("protos/helloworld.protos",
-                                            include_paths=["../../.."])
+protos, services = grpc.protos_and_services(
+    "protos/helloworld.protos", include_paths=["../../.."])
 from request_header_validator_interceptor import RequestHeaderValidatorInterceptor
 
 
diff --git a/examples/python/metadata/metadata_client.py b/examples/python/metadata/metadata_client.py
index f1d3753f065..1fe3367ca5d 100644
--- a/examples/python/metadata/metadata_client.py
+++ b/examples/python/metadata/metadata_client.py
@@ -18,8 +18,8 @@ import logging
 
 import grpc
 
-protos, services = grpc.protos_and_services("protos/helloworld.proto",
-                                            include_paths=["../.."])
+protos, services = grpc.protos_and_services(
+    "protos/helloworld.proto", include_paths=["../.."])
 
 
 def run():
diff --git a/examples/python/metadata/metadata_server.py b/examples/python/metadata/metadata_server.py
index ad28f483e5b..2efe2291d88 100644
--- a/examples/python/metadata/metadata_server.py
+++ b/examples/python/metadata/metadata_server.py
@@ -19,8 +19,8 @@ import logging
 
 import grpc
 
-protos, services = grpc.protos_and_services("protos/helloworld.proto",
-                                            include_paths=["../.."])
+protos, services = grpc.protos_and_services(
+    "protos/helloworld.proto", include_paths=["../.."])
 
 
 class Greeter(services.GreeterServicer):
diff --git a/examples/python/multiplex/multiplex_client.py b/examples/python/multiplex/multiplex_client.py
index 319e3d5d171..fdd74f90363 100644
--- a/examples/python/multiplex/multiplex_client.py
+++ b/examples/python/multiplex/multiplex_client.py
@@ -21,10 +21,10 @@ import logging
 
 import grpc
 
-hw_protos, hw_services = grpc.protos_and_services("protos/helloworld.proto",
-                                                  include_paths=["../.."])
-rg_protos, rg_services = grpc.protos_and_services("protos/route_guide.proto",
-                                                  include_paths=["../.."])
+hw_protos, hw_services = grpc.protos_and_services(
+    "protos/helloworld.proto", include_paths=["../.."])
+rg_protos, rg_services = grpc.protos_and_services(
+    "protos/route_guide.proto", include_paths=["../.."])
 import route_guide_resources
 
 
diff --git a/examples/python/multiplex/multiplex_server.py b/examples/python/multiplex/multiplex_server.py
index b9caf36e8d0..bb32f2a946f 100644
--- a/examples/python/multiplex/multiplex_server.py
+++ b/examples/python/multiplex/multiplex_server.py
@@ -20,10 +20,10 @@ import logging
 
 import grpc
 
-hw_protos, hw_services = grpc.protos_and_services("protos/helloworld.proto",
-                                                  include_paths=["../.."])
-rg_protos, rg_services = grpc.protos_and_services("protos/route_guide.proto",
-                                                  include_paths=["../.."])
+hw_protos, hw_services = grpc.protos_and_services(
+    "protos/helloworld.proto", include_paths=["../.."])
+rg_protos, rg_services = grpc.protos_and_services(
+    "protos/route_guide.proto", include_paths=["../.."])
 import route_guide_resources
 
 
@@ -59,8 +59,7 @@ def _get_distance(start, end):
 class _GreeterServicer(hw_services.GreeterServicer):
 
     def SayHello(self, request, context):
-        return hw_protos.HelloReply(
-            message='Hello, {}!'.format(request.name))
+        return hw_protos.HelloReply(message='Hello, {}!'.format(request.name))
 
 
 class _RouteGuideServicer(rg_services.RouteGuideServicer):
@@ -121,10 +120,8 @@ class _RouteGuideServicer(rg_services.RouteGuideServicer):
 
 def serve():
     server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-    hw_services.add_GreeterServicer_to_server(_GreeterServicer(),
-                                                      server)
-    rg_services.add_RouteGuideServicer_to_server(
-        _RouteGuideServicer(), server)
+    hw_services.add_GreeterServicer_to_server(_GreeterServicer(), server)
+    rg_services.add_RouteGuideServicer_to_server(_RouteGuideServicer(), server)
     server.add_insecure_port('[::]:50051')
     server.start()
     server.wait_for_termination()
diff --git a/examples/python/multiplex/route_guide_resources.py b/examples/python/multiplex/route_guide_resources.py
index c0d30a42ba4..bd92bc9fc12 100644
--- a/examples/python/multiplex/route_guide_resources.py
+++ b/examples/python/multiplex/route_guide_resources.py
@@ -17,8 +17,7 @@ import json
 
 import grpc
 
-protos = grpc.protos("protos/route_guide.proto",
-                     include_paths=["../.."])
+protos = grpc.protos("protos/route_guide.proto", include_paths=["../.."])
 
 
 def read_route_guide_database():
diff --git a/examples/python/route_guide/route_guide_client.py b/examples/python/route_guide/route_guide_client.py
index 49a9fc07e79..dd54635eca6 100644
--- a/examples/python/route_guide/route_guide_client.py
+++ b/examples/python/route_guide/route_guide_client.py
@@ -20,8 +20,8 @@ import logging
 
 import grpc
 
-protos, services = grpc.protos_and_services("protos/route_guide.proto",
-                                            include_paths=["../.."])
+protos, services = grpc.protos_and_services(
+    "protos/route_guide.proto", include_paths=["../.."])
 import route_guide_resources
 
 
diff --git a/examples/python/route_guide/route_guide_resources.py b/examples/python/route_guide/route_guide_resources.py
index 9d232e7e940..530daad79ea 100644
--- a/examples/python/route_guide/route_guide_resources.py
+++ b/examples/python/route_guide/route_guide_resources.py
@@ -16,8 +16,7 @@
 import json
 
 import grpc
-protos = grpc.protos("protos/route_guide.proto",
-                     include_paths=["../.."])
+protos = grpc.protos("protos/route_guide.proto", include_paths=["../.."])
 
 
 def read_route_guide_database():
diff --git a/examples/python/route_guide/route_guide_server.py b/examples/python/route_guide/route_guide_server.py
index 2d03f7f0cda..eeb5782b97f 100644
--- a/examples/python/route_guide/route_guide_server.py
+++ b/examples/python/route_guide/route_guide_server.py
@@ -20,8 +20,8 @@ import logging
 
 import grpc
 
-protos, services = grpc.protos_and_services("protos/route_guide.proto",
-                                            include_paths=["../.."])
+protos, services = grpc.protos_and_services(
+    "protos/route_guide.proto", include_paths=["../.."])
 import route_guide_resources
 
 
@@ -113,8 +113,7 @@ class RouteGuideServicer(services.RouteGuideServicer):
 
 def serve():
     server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-    services.add_RouteGuideServicer_to_server(
-        RouteGuideServicer(), server)
+    services.add_RouteGuideServicer_to_server(RouteGuideServicer(), server)
     server.add_insecure_port('[::]:50051')
     server.start()
     server.wait_for_termination()