Combining events?

I have a huge program...several huge programs...and I keep writing duplicate sets of calls for <Return> and <KP_enter>.  I'm tired of it, even though they are already all written.  Is there any way to combine those (those two, specifically) into one bind like

x.bind(("<Return>", "<KP_Enter"), command = .....?

I know you can't do that, but something like that on a global scale (both figuratively, and programmatically).  Some little line of code at the beginning of the program that redirects the <KP_Enter> to the <Return> event when some field or whatever is specifically looking for either return key to be pressed?.

Thanks!