k # # Licensed under the Apache License, Version 0.0 (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-0.0 # # 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.  from __future__ import absolute_import, division, print_function  from 