Most snakes will also 'learn' where the flaws are at in their enclosures. If your snake finds a way out....it will find the same way out again when put back into the enclosure....but this time it will usually be alot quicker than the first time

It all goes back to the way they must 'learn' in nature. I have seen speckled kingsnakes in piles of junk that would seem to be monsterous mazes..yet they do not 'get lost'....and they will find the quickest escape route to the side of the pile that you are not standing on....I think that takes some form of intelligence...or at least a great memory