Two reasons;
Burms have block patterns in square-ish shapes, African rocks have a more swirling, wavey pattern down the back. Very easily distinguished.
The only genetic morph yet discovered in African rocks is patternless, there are no known albinos of this species
Just had a E-Mail from a snake specialist and yes it's a Albino Burmese Python I had a little incline it was a Albino but unsure which one thanks everybody for your help