diff --git a/nose/pyversion.py b/nose/pyversion.py
index 091238da..e710d212 100644
--- a/nose/pyversion.py
+++ b/nose/pyversion.py
@@ -55,6 +55,8 @@ def __gt__(self, other):
             return mycmp(self.obj, other.obj) > 0
         def __eq__(self, other):
             return mycmp(self.obj, other.obj) == 0
+        def __hash__(self):
+            return hash(obj)
     return Key
 
 # Python 2.3 also does not support list-sorting by key, so we need to convert
diff --git a/unit_tests/mock.py b/unit_tests/mock.py
index 98e7d436..4bcbd005 100644
--- a/unit_tests/mock.py
+++ b/unit_tests/mock.py
@@ -92,7 +92,7 @@ def __init__(self, **kw):
         self.__dict__['d'].update(kw)
         
     def __getattr__(self, attr):
-        if not self.__dict__.has_key('d'):
+        if not 'd' in self.__dict__:
             return None
         return self.__dict__['d'].get(attr)