I don't reccomend it. That might be different if you lived in the natural habitat of the ball python, in west Africa, and came across wild African Soft furred rats or whatever they eat in the wild, and may not have as big as an effect on their metabolism and parasites that they may have evolved to cope with. I'm not sure if that's true though.

If you do it, it's at your own risk really. We can't stop you from doing it, but be prepared with money for vets if a snake does get sick from it's parasites, it is likely to happen.

Personal experience- When I was younger, we fed the mutual household corn snake wild rat pinks that we found in out chicken coop, dying baby birds, and even dead mice that she would eat on her own if she saw it. She had no visible ailments and lived a healthy life, but very likely had worms and other parasites in her. Note that corn snakes are native to the Americas and might eat those animals in the wild.