A lot of people say snakes dont need lights but i dont agree. i think any animal that will be out in the day even very briefly will still benefit from lighting. Even a day/night cycle. I give all my snakes lighting and during the summer, i try and get them outside at least twice a week for anywhere from 15-30 mins depending how they react. If they try to hide under my arms, i just bring them back in. If they go gung ho and start exploring, i let them soak up some rays. I try not to put them in direct sunlight for more than a couple mins as it can heat them up fast. I more just give them a shaded spot on me to sit on.
And for Pat, i use UVB lighting. I would like to use it for all my snakes but i am in the process of trying to think of a good way to rig something.