How little are you talking about? If it's a young snake the bite really wont even be more than a tiny nip. However my best advice would be if it's a new snake and you have given him/her the week or two to get acclimated to his surroundings and he's eating properly then I would say get in there and try and get the snake out of the enclosure. Most snakes and this is true of most snakes including bigger pythons as well they usually calm down outside of the housing especially the hide. If you really worried about getting bit then try misting the snake a bit I find that it at a minimum gives the snake something else to think about other than striking you.
Best of luck