Taming a very nippy one year old.

[antsterr]

I just got back from the Alberta Reptile and Amphibian Society show and sale in Calgary, I was on the hunt for a Brazilian Rainbow but when there were none as a consolation prize I got myself a one year old Columbian Rainbow and a hatchling Jungle Carpet Python . Now this Columbian guy is a year old in two days so he's a fair size already, about 3 feet long. But boy oh boy is he nippy. I've only had Corn Snakes before so snake bites are totally new to me. The bits don't hurt but I've got to get him tame if he's going to be a keeper. From what I understand he's really never been handled and he lived at the breeders place in a large rack drawer along with hundreds of other snakes of various kinds. Does he just need to be handled more? when he bites should I just let him be until he calms down or can you teach them that it's wrong to bite like you would a dog. No! bad snake! ha ha. May he was just upset because of the 3 hour car ride in a tiny plastic box and the full day with no humidity. Do these snakes ever latch on when they bite or just nip and pull back?

Anyway, these two are my first snakes that aren't corns, and if you've had corns you know that biting just isn't even a worry. I don't want to sound like I'm unprepared, I've made sure I understand his living needs and proper care, it's just the taming method I need to know.
Thanks and expect pictures after I've let him settle down in his new home.