Tips on taming a nippy Jungle/Jaguar carpet python?

[C#@$e]

just hold him frequently...... start with 5 minute handling sessions and eventually work your way up, he will get used to you ( side note: when was the last time you feed him and are you washing your hands before you pick him up) snakes have an excellent sense of smell and if your hands smell like a prey item that might be a reason.