You're much more likely to get bit while transferring them (also, moving them for feedings can cause issues), and most ball pythons are shy eaters; they're not going to bite unless they're sure it's food. And sometimes not even then.Aggression is really not a concern with ball pythons. And even if you get bit once or twice (it's bound to happen with any snake), it's no big deal at all.
http://ball-pythons.net/forums/showt...-separate-cage