diff -r 52f68c95e025 Lib/idlelib/AutoComplete.py
--- a/Lib/idlelib/AutoComplete.py	Thu Jan 26 08:47:27 2012 -0600
+++ b/Lib/idlelib/AutoComplete.py	Sat Feb 04 10:22:16 2012 -0600
@@ -190,7 +190,7 @@
                     bigl = eval("dir()", namespace)
                     bigl.sort()
                     if "__all__" in bigl:
-                        smalll = eval("__all__", namespace)
+                        smalll = list(eval("__all__", namespace))
                         smalll.sort()
                     else:
                         smalll = [s for s in bigl if s[:1] != '_']
@@ -200,7 +200,7 @@
                         bigl = dir(entity)
                         bigl.sort()
                         if "__all__" in bigl:
-                            smalll = entity.__all__
+                            smalll = list(entity.__all__)
                             smalll.sort()
                         else:
                             smalll = [s for s in bigl if s[:1] != '_']