cats are predators that kill things smaller than them that move. most ball pythons are smaller than cats, and they move. You should not let your cats and snakes interact, ever. you're literally asking for trouble.

I have some snakes i dont even dare to handle when my cats are awake because they are completely reactive to my cats, they get very antsy and i've even been bitten by a ball python because one of my cats startled it (id' rather ME get bitten than the cat).