MNT: make figure use base-class __getstate__

tacaswell · tacaswell · commit 5bd4711495fd · 2015-08-10T01:07:08.000-04:00
This make sure that the artist-level unpickable attributes are
picked off.
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -1360,7 +1360,7 @@ def _gci(self):
         return None
 
     def __getstate__(self):
-        state = self.__dict__.copy()
+        state = super(Figure, self).__getstate__()
         # the axobservers cannot currently be pickled.
         # Additionally, the canvas cannot currently be pickled, but this has
         # the benefit of meaning that a figure can be detached from one canvas,
