Index: Objects/typeobject.c
===================================================================
--- Objects/typeobject.c	(revision 61730)
+++ Objects/typeobject.c	(working copy)
@@ -4878,7 +4878,19 @@
 	return NULL;
 }
 
-SLOT2(slot_sq_slice, "__getslice__", Py_ssize_t, Py_ssize_t, "nn")
+static PyObject*
+slot_sq_slice(PyObject *self, Py_ssize_t i, Py_ssize_t j)
+{
+	static PyObject *getslice_str;
+	
+	if (Py_Py3kWarningFlag &&
+		PyErr_WarnEx(PyExc_DeprecationWarning,
+		"In 3.x, __getslice__ is removed. Use __getitem__.",
+		2) < 0)
+		return NULL;
+	return call_method(self, "__getslice__", &getslice_str,
+		"nn", i, j);
+}
 
 static int
 slot_sq_ass_item(PyObject *self, Py_ssize_t index, PyObject *value)
@@ -4903,13 +4915,25 @@
 {
 	PyObject *res;
 	static PyObject *delslice_str, *setslice_str;
-
-	if (value == NULL)
+	
+	if (value == NULL) {
+		if (Py_Py3kWarningFlag &&
+			PyErr_WarnEx(PyExc_DeprecationWarning,
+			"In 3.x, __delslice__ is removed. Use __delitem__.",
+			2) < 0)
+			return -1;
 		res = call_method(self, "__delslice__", &delslice_str,
 				  "(nn)", i, j);
-	else
-		res = call_method(self, "__setslice__", &setslice_str,
+	}
+	else {
+		if (Py_Py3kWarningFlag &&
+			PyErr_WarnEx(PyExc_DeprecationWarning,
+			"In 3.x, __setslice__ is removed. Use __setitem__.",
+			2) < 0)
+			return -1;		
+			res = call_method(self, "__setslice__", &setslice_str,
 				  "(nnO)", i, j, value);
+	}
 	if (res == NULL)
 		return -1;
 	Py_DECREF(res);
Index: Lib/test/test_py3kwarn.py
===================================================================
--- Lib/test/test_py3kwarn.py	(revision 61730)
+++ Lib/test/test_py3kwarn.py	(working copy)
@@ -117,6 +117,25 @@
                 f.softspace = 0
             with catch_warning() as w:
                 self.assertWarning(set(), w, expected)
+    
+    def test_slice_methods(self):
+        class Spam(object):
+            def __getslice__(self, i, j): pass
+            def __setslice__(self, i, j, what): pass
+            def __delslice__(self, i, j): pass
+        obj = Spam()
+        
+        expected = "In 3.x, __getslice__ is removed. Use __getitem__."
+        with catch_warning() as w:
+            self.assertWarning(obj[1:2], w, expected)
+        expected = "In 3.x, __delslice__ is removed. Use __delitem__."
+        with catch_warning() as w:
+            del obj[3:4]
+            self.assertWarning(None, w, expected)
+        expected = "In 3.x, __setslice__ is removed. Use __setitem__."
+        with catch_warning() as w:
+            obj[4:5] = "eggs"
+            self.assertWarning(None, w, expected)
 
 
 def test_main():