SF patch 1631942 by Collin Winter:
(a) "except E, V" -> "except E as V"
(b) V is now limited to a simple name (local variable)
(c) V is now deleted at the end of the except block
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index 30c1e7c..0f1386e 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -585,7 +585,7 @@
         badpickle = pickle.PROTO + chr(oob) + build_none
         try:
             self.loads(badpickle)
-        except ValueError, detail:
+        except ValueError as detail:
             self.failUnless(str(detail).startswith(
                                             "unsupported pickle protocol"))
         else: