freeze_graph_python.py

from tensorflow.python.framework import graph_util

# Suppose you have obtained in a way or the other a graph object, and suppose
# you have a list of the output nodes names (manually created after inspectection
# with tensorboard for example). Then, one way to build a frozen graph is the following:

with tf.Session(graph=graph) as sess:
  graph_def = graph.as_graph_def()
  frozen_graph_def = graph_util.convert_variables_to_constants(
        sess, graph_def, output_node_names)