Got rid of the internal datetimetz type.
diff --git a/Lib/test/test_datetime.py b/Lib/test/test_datetime.py
index 0cda5d0..a46e3ca 100644
--- a/Lib/test/test_datetime.py
+++ b/Lib/test/test_datetime.py
@@ -2076,7 +2076,7 @@
         tinfo = PicklableFixedOffset(-300, 'cookie')
         orig = self.theclass(*args, **{'tzinfo': tinfo})
         state = orig.__getstate__()
-        derived = self.theclass(1, 1, 1)
+        derived = self.theclass(1, 1, 1, tzinfo=FixedOffset(0, "", 0))
         derived.__setstate__(state)
         self.assertEqual(orig, derived)
         self.failUnless(isinstance(derived.tzinfo, PicklableFixedOffset))