Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/scripts/makedir.py b/Demo/scripts/makedir.py
index f70facd..7095868 100755
--- a/Demo/scripts/makedir.py
+++ b/Demo/scripts/makedir.py
@@ -15,7 +15,7 @@
     if p and not os.path.isdir(p):
         head, tail = os.path.split(p)
         makedirs(head)
-        os.mkdir(p, 0777)
+        os.mkdir(p, 0o777)
 
 if __name__ == "__main__":
     main()