Change the hotkeys of radial pie menus

I would like to change the hotkeys of the buttons in my radial menu.
For example I would like to tap A or 3 to select Disable Snap, since I don’t like the automatic shortcuts Blender creates for me. Can you do that?

That’s actually something I always wondered. While it’s a little sad that the pie menus aren’t customizable it’s really weird that the hotkeys aren’t changeable.
This is a Phython addon, isn’t it?

Yes, I wrote it myself, since I didn’t like to go the top part of the screen to change the snap settings.