Florida King Snake. My son had one as a pet for about 15 years. I got it for him when he was 5 to get him over a fear of snakes. It was 10" long. It stopped growing at 4'-8". Very tame and friendly snake. Markings exactly the same but yours has slightly more black.
He lost his fear of snakes the first week, then I learned they live over 20 years.
