My first thought was that your friend actually landed an albino checkered garter. ha ha Then the head confirmed kingsnake in my eyes.
Though the pattern didn't look to me like it was entirely either pattern variation. So I did a search. It looks like there is an albino banded and striped California kingsnake.
Here's a couple links for you...
Click on the first two pictures and you'll see the color and pattern mutation your friend has here.
Click here and you'll see a picture of an albino banded California kingsnake here.
Click here and you'll see a picture of an albino striped California kingsnake here.
Thanks for sharing!![]()