fix pickling

rmorshea · rmorshea · commit 9784b8ca9768 · 2015-08-14T19:36:58.000-07:00
diff --git a/lib/matplotlib/traitlets.py b/lib/matplotlib/traitlets.py
@@ -59,6 +59,12 @@ def ex(self, key):
 
     def _default_generator(self, key): pass
 
+    def __getstate__(self):
+        d = self.__dict__.copy()
+        # remove unpickleable method
+        d['_default_generator'] = None
+        return d
+
 
 class PrivateMethodMixin(object):
 
