text: # Copyright 2015 The TensorFlow 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.
  # ==============================================================================
  
  """Helpers to manipulate a tensor graph in python.
  """
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  
  # pylint: disable=unused-import
  from tensorflow.python.framework.graph_util_impl import convert_variables_to_constants
  from tensorflow.python.framework.graph_util_impl import extract_sub_graph
  from tensorflow.python.framework.graph_util_impl import must_run_on_cpu
  from tensorflow.python.framework.graph_util_impl import remove_training_nodes
  from tensorflow.python.framework.graph_util_impl import set_cpu0
  from tensorflow.python.framework.graph_util_impl import tensor_shape_from_node_def_name
  # pylint: enable=unused-import
  from tensorflow.python.util.all_util import remove_undocumented
  
  _allowed_symbols = [
      # TODO(drpng): find a good place to reference this.
      "convert_variables_to_constants",
      "extract_sub_graph",
      "must_run_on_cpu",
      "set_cpu0",
      "tensor_shape_from_node_def_name",
      "remove_training_nodes",
  ]
  remove_undocumented(__name__, _allowed_symbols)
  