Armin> Question: is it possible to rename the __builtin__.open call to Armin> __builtin__.fopen because it does really a fopen library call?? Armin> Or does it break something ?? Any code that calls open(fname) would no longer work. You'd have to replace it with something else. -- Skip Montanaro (skip at pobox.com) http://www.mojam.com/ http://www.musi-cal.com/