diff options
Diffstat (limited to 'tensorflow/python/tools/freeze_graph.py')
| -rw-r--r-- | tensorflow/python/tools/freeze_graph.py | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tensorflow/python/tools/freeze_graph.py b/tensorflow/python/tools/freeze_graph.py index 130fe70beb..acf070075e 100644 --- a/tensorflow/python/tools/freeze_graph.py +++ b/tensorflow/python/tools/freeze_graph.py @@ -59,6 +59,21 @@ from tensorflow.python.training import checkpoint_management from tensorflow.python.training import saver as saver_lib +def _has_variables(sess): + """Determines if the graph has any variables. + + Args: + sess: TensorFlow Session. + + Returns: + Bool. + """ + for op in sess.graph.get_operations(): + if op.type.startswith("Variable") or op.type.endswith("VariableOp"): + return False + return True + + def freeze_graph_with_def_protos(input_graph_def, input_saver_def, input_checkpoint, @@ -152,6 +167,11 @@ def freeze_graph_with_def_protos(input_graph_def, "from checkpoint files. Please pass in a SavedModel using " "the flag --input_saved_model_dir.") return -1 + # Models that have been frozen previously do not contain Variables. + elif _has_variables(sess): + print("No variables were found in this model. It is likely the model " + "was frozen previously. You cannot freeze a graph twice.") + return 0 else: raise e |