diff --git a/test/sd-script.py b/test/sd-script.py
index 7662b12ab80..51ebf70c39e 100644
--- a/test/sd-script.py
+++ b/test/sd-script.py
@@ -100,6 +100,12 @@ class SD(object):
     def __cmp__(self, other):
         return cmp(self._num, other._num)
 
+    def __eq__(self, other):
+        return self.__cmp__(other) == 0
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     def __hash__(self):
         return hash(self._num)