Leave _frame_objs as empty list (not None) in BaseFigureWidget

Jon M. Mease · Jon M. Mease · commit 70e76e15abb6 · 2018-04-16T06:25:28.000-04:00
Causing error in to_plotly_json
diff --git a/plotly/basewidget.py b/plotly/basewidget.py
@@ -131,7 +131,6 @@ def __init__(self,
         # Frames are not supported by figure widget
         if self._frame_objs:
             BaseFigureWidget._display_frames_error()
-        self._frame_objs = None
 
         # Message States
         # --------------
