Issue 2235: Py3k warnings are now emitted for classes that will no longer inherit a__hash__ implementation from a parent class in Python 3.x. The standard library and test suite have been updated to not emit these warnings.
diff --git a/Lib/test/test_slice.py b/Lib/test/test_slice.py
index 8c90c10..854805b 100644
--- a/Lib/test/test_slice.py
+++ b/Lib/test/test_slice.py
@@ -33,6 +33,7 @@
         class BadCmp(object):
             def __eq__(self, other):
                 raise Exc
+            __hash__ = None # Silence Py3k warning
 
         s1 = slice(BadCmp())
         s2 = slice(BadCmp())