Add popitem().
diff --git a/Lib/UserDict.py b/Lib/UserDict.py
index 9b6e73b..b642db7 100644
--- a/Lib/UserDict.py
+++ b/Lib/UserDict.py
@@ -38,3 +38,5 @@
         if not self.data.has_key(key):
             self.data[key] = failobj
         return self.data[key]
+    def popitem(self):
+        return self.data.popitem()