Deleting cyclic object comparison.
SF patch 825639
http://mail.python.org/pipermail/python-dev/2003-October/039445.html
diff --git a/Lib/test/test_copy.py b/Lib/test/test_copy.py
index 3d44304..6e32ddd 100644
--- a/Lib/test/test_copy.py
+++ b/Lib/test/test_copy.py
@@ -272,10 +272,10 @@
         x = []
         x.append(x)
         y = copy.deepcopy(x)
-        self.assertEqual(y, x)
+        self.assertRaises(RuntimeError, cmp, y, x)
         self.assert_(y is not x)
-        self.assert_(y[0] is not x[0])
-        self.assert_(y is y[0])
+        self.assert_(y[0] is y)
+        self.assertEqual(len(y), 1)
 
     def test_deepcopy_tuple(self):
         x = ([1, 2], 3)
@@ -288,7 +288,7 @@
         x = ([],)
         x[0].append(x)
         y = copy.deepcopy(x)
-        self.assertEqual(y, x)
+        self.assertRaises(RuntimeError, cmp, y, x)
         self.assert_(y is not x)
         self.assert_(y[0] is not x[0])
         self.assert_(y[0][0] is y)
@@ -304,10 +304,10 @@
         x = {}
         x['foo'] = x
         y = copy.deepcopy(x)
-        self.assertEqual(y, x)
+        self.assertRaises(RuntimeError, cmp, y, x)
         self.assert_(y is not x)
         self.assert_(y['foo'] is y)
-        self.assertEqual(y, {'foo': y})
+        self.assertEqual(len(y), 1)
 
     def test_deepcopy_keepalive(self):
         memo = {}