Exception classes must be within a tuple.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@14214 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/XMLMatrix.py

@@ -241,7 +241,7 @@ class XMLMatrix(Folder):
                                             # then we do not need to
                                             # work on it
               object_id_list += [object_id]
-            except ValueError, KeyError:
+            except (ValueError, KeyError):
               pass
 
       for object_id in object_id_list: