--- C:\apps\Python26\Lib\rlcompleter.py	2008-07-31 23:45:50.000000000 -0200
+++ C:\apps\Python26\Lib\rlcompleter.workingcopy.py	2009-01-27 01:53:29.000000000 -0200
@@ -148,11 +148,13 @@
             words.extend(get_class_members(thisobject.__class__))
         matches = []
         n = len(attr)
+        seen = set()
         for word in words:
-            if word[:n] == attr and hasattr(thisobject, word):
+            if word not in seen and word[:n] == attr and hasattr(thisobject, word):
                 val = getattr(thisobject, word)
                 word = self._callable_postfix(val, "%s.%s" % (expr, word))
                 matches.append(word)
+                seen.add(word)
         return matches
 
 def get_class_members(klass):