The pictures aren't very clear, but no, that isn't normal shed-related change. Try to get some clearer pics if possible. It looks like you have him on soil that is growing grass, and from the reflection in the glass, I'm thinking that this is in his terrarium. Is that correct? Although it's not impossible to keep healthy ball pythons that way, it would be VERY difficult to (and keep your snake healthy), and it generally isn't recommended for most, let alone a new owner. You should probably take him to the vet, dump the soil, sterilize the aquarium, and read up on husbandry.