diff -r dc4e6b48c321 Lib/test/test_set.py
--- a/Lib/test/test_set.py	Thu Sep 05 22:57:20 2013 +0100
+++ b/Lib/test/test_set.py	Fri Sep 06 11:12:29 2013 +0200
@@ -1615,7 +1615,7 @@
             for meth in (s.union, s.intersection, s.difference, s.symmetric_difference, s.isdisjoint):
                 for g in (G, I, Ig, L, R):
                     expected = meth(data)
-                    actual = meth(G(data))
+                    actual = meth(g(data))
                     if isinstance(expected, bool):
                         self.assertEqual(actual, expected)
                     else: