For reasons I dare not explain, this script should always execute

main() when imported (in other words, it is not usable as a module).

Tools/scripts/dutree.py

@@ -56,5 +56,4 @@ def show(total, d, prefix):
 		if d.has_key(key):
 			show(tsub, d[key][1], psub)
 
-if __name__ == "__main__":
-	main()
+main()