add comments

Author: mapingshuo

api_examples/paddle/fluid/prune_with_input.py

@@ -1,3 +1,22 @@
+# Copyright (c) 2019 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
+# limitations under the License.
+
+# api: paddle.fluid.framework.Program._prune_with_input()
+# env: local
+# device: cpu
+# text：prune-with-input
+
 import paddle.fluid as fluid
 import paddle.fluid.optimizer as optimizer
 import numpy as np