Now i have no idea if your snake is dangerous or not?
But if you don't like snakes in the shop you'll HATE this story..
A friend of mine moved on to an old farm property, there was an old chicken coop about 15 by 25 foot .. he stripped it down and turned it into a really nice shop with a paint booth on one end. Everything was fine and dandy and then one day snakes just started to appear all over the place.. he finally came to the conclusion that quite a few harmless types like garden snakes and bull snakes had been breeding in and around this building for years...
he always talks about it like it was that one scene from Indiana Jones ! hahahaha
Anyhow I am not sure exactly how he got it under control but it seems to be a problem from the past now.