A question about event handlers with wxPython

[Erik Lind]

I'd appreciate any pointer on a simple way to tell within an event handler 
where the event came from.
I want to have "while" condition in a handler to stop or change processing 
if an event occurs from some other button click.

Trying to bind more than one event to the same handler still doesn't tell me 
where the event came from in a basic bind. Is there an argument I can put in 
the bind so as to identify the source of the event in the event argument? .