Very interesting find. Let's hope it survives.
One has to bear in mind that the albino form of a brown/black, uniform coloured snake would be white, pink or yellow.
The only way to tell the difference is the colour of the eyes. Leucies have black or blue eyes while albinos have red eyes.
Either that, or the finder was EXTREMELY luck to find a double homozygous albino leucistic
"I am dying by inches from not having anybody to talk to about insects." - Charles Darwin