Actually removing it would be helpful

Author: StanFromIreland

Lib/test/test_capi/test_bytes.py

@@ -222,7 +222,6 @@ def test_decodeescape(self):
         self.assertEqual(decodeescape(br'x\xa\xy', 'replace'), b'x??y')
         self.assertEqual(decodeescape(br'x\xa\xy', 'ignore'), b'xy')
         self.assertRaises(ValueError, decodeescape, b'\\', 'spam')
-        self.assertEqual(decodeescape(NULL), b'')
         self.assertRaises(OverflowError, decodeescape, b'abc', NULL, PY_SSIZE_T_MAX)
         self.assertRaises(OverflowError, decodeescape, NULL, NULL, PY_SSIZE_T_MAX)