Jan, > So what you want to do is dynamic scope?
No, not really. I was looking for method to let one procedure share a variable with its caller - or callers, selectable by me. And as a "by reference" argument does not seem to exist in Python ... And yes, I am a ware that procedures can return multiple results. I just didn'want to go that way (using the same variable twice in a single calling). Regards, Rudy Wieser -- https://mail.python.org/mailman/listinfo/python-list