They like to feel secure as youngins but I wouldn't say they like to be cramped. As they move into adult hood they definitely appreciate all the space they can get to stretch out and be able to move around as they please.
Good lookin blood and as other have stated sphagnum moss, and cypress mulch will hold humidity much better than aspen, or that confetti looking stuff you have him/her on in the pic, which is crucial with blood pythons.
Good luck man!