jupyter#751 handling widget metadata without model_name

maartenbreddels · Mar 22, 2019 · d513964 · d513964
1 parent 48c6edd
commit d513964
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/nbconvert/preprocessors/execute.py b/nbconvert/preprocessors/execute.py
@@ -569,8 +569,8 @@ def _serialize_widget_state(state):
     TODO: Does not currently split binary buffers or remove default values.
     """
     return {
-        'model_name': state['_model_name'],
-        'model_module': state['_model_module'],
+        'model_name': state.get('_model_name'),
+        'model_module': state.get('_model_module'),
         'model_module_version': state.get('_model_module_version'),
         'state': state,
     }