Hahaha!! I rem when the 'snake sausages' came out. I didn't know they still made them.
If they are properly formulated like a whole rodent prey item, and you could convince the snake to eat the things, maybe it would be "okay". Ideally a typical python should eat a rodent. I'm not sure what the point of processing a bunch of stuff and making it into a non-prey object does for the python or the keeper.