Variable: Do not pickle master attribute

biolab · Oct 10, 2017 · 2883f1a · 2883f1a
1 parent 01f9aec
commit 2883f1a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Orange/data/variable.py b/Orange/data/variable.py
@@ -425,7 +425,9 @@ def __reduce__(self):
         if not self.name:
             raise PickleError("Variables without names cannot be pickled")
 
-        return make_variable, (self.__class__, self._compute_value, self.name), self.__dict__
+        __dict__ = dict(self.__dict__)
+        __dict__.pop("master", None)
+        return make_variable, (self.__class__, self._compute_value, self.name), __dict__
 
     def copy(self, compute_value):
         var = type(self)(self.name, compute_value=compute_value)