They are different then ball pythons though you can keep them pretty much the same way (I keep mine in the top drawers of my racks that use the CB-70 size tubs) They feed differently, instead of a quick strike they're more likely to just push against the rat with their nose or shove it up against the side of the tub while slowly opening their mouth to grab on. It's been erroneously reported that they have no heat sensing organs. While they don't have any heat pits per se, they do have heat sensing receptors that I believe are located a little lower down on their faces unlike the heat pits we're more used to seeing on our pythons noses, mine do appear to 'look up' at me inquisitively when I open their tub, but I believe what they're really doing is zeroing in on my heat signature.
I bought one of mine from Nick Mutton at Inland reptiles. (http://www.inlandreptile.com/index.html) I don't remember who I got the other one from, it was at a local show.