add copyright to __init__.py in distributed folder

paddle/fluid/pybind/async_executor_py.cc

@@ -49,13 +49,13 @@ void BindAsyncExecutor(py::module* m) {
             new framework::AsyncExecutor(scope, place));
       }))
       .def("run_from_files", &framework::AsyncExecutor::RunFromFile)
-      .def("init_server",   &framework::AsyncExecutor::InitServer)
+      .def("init_server", &framework::AsyncExecutor::InitServer)
-      .def("init_worker",  &framework::AsyncExecutor::InitWorker)
+      .def("init_worker", &framework::AsyncExecutor::InitWorker)
-      .def("start_server",  &framework::AsyncExecutor::StartServer)
+      .def("start_server", &framework::AsyncExecutor::StartServer)
-      .def("stop_server",  &framework::AsyncExecutor::StopServer)
+      .def("stop_server", &framework::AsyncExecutor::StopServer)
-      .def("gather_servers",  &framework::AsyncExecutor::GatherServers)
+      .def("gather_servers", &framework::AsyncExecutor::GatherServers)
-      .def("init_model",  &framework::AsyncExecutor::InitModel)
+      .def("init_model", &framework::AsyncExecutor::InitModel)
-      .def("save_model",  &framework::AsyncExecutor::SaveModel);
+      .def("save_model", &framework::AsyncExecutor::SaveModel);
 }  // end BindAsyncExecutor
 #else
 void BindAsyncExecutor(py::module* m) {
@@ -64,7 +64,7 @@ void BindAsyncExecutor(py::module* m) {
         return std::unique_ptr<framework::AsyncExecutor>(
             new framework::AsyncExecutor(scope, place));
       }))
-      .def("run_from_files", &framework::AsyncExecutor::RunFromFile)
+      .def("run_from_files", &framework::AsyncExecutor::RunFromFile);
 }  // end BindAsyncExecutor
 #endif
 }  // end namespace pybind

python/paddle/fluid/distributed/__init__.py

@@ -0,0 +1,12 @@
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and