A snake that thinks it's getting fed whenever the cage door opens, or a snake that thinks it's getting fed whenever it is taken out of the cage? As mentioned below, there are ways to tell a snake it is not getting fed. I use the hook method as well and once that hook touches the snake, you can see the feeding switch turn off. If you feed outside of the cage, you run the risk of the snake associating feeding with being taken out every time. you don't want that, especially if you have kids or if other people will be interacting with it.
Allow the cage to be the snakes domain. It is where it eats, sleeps, craps, etc. No hands in the cage with the snake in the cage and use hooks all the time. I have personally experienced that this makes a much more manageable animal when they are out of the cage.
I have been bitten by a burm ONE time from a feeding response and that snake was fed outside of the cage. I have not even been sticken at by one of my burms outside of the cage after i switched to cage only feeding 7 years ago.
Take care.
Dave
Mosaic Scales