message: Decode C++ string (bytes in Python) as utf-8 when returning to Python
  Without this the newlines are printed as `\n` in Python.
diff: @@ -68,7 +68,7 @@ static string ImportGraphDef(const string &graphdef, TF_Status* status);
  %insert("python") %{
  def import_graphdef(graphdef):
  - return str(ImportGraphDef(str(graphdef).encode('utf-8')));
  + return ImportGraphDef(str(graphdef).encode('utf-8')).decode('utf-8');
  %}
  %unignoreall
  