I'm not totally following you,
First I'm talking about a Spotted Python not a Ba Python. Second why cover back and sides with black paper, they are already covered with a nice rock style tiles.
Below is what I researched and found for care for Spotty's;
Free Reptile Care Sheets - Your source for FREE REPTILE CARE SHEETS!
"Low 70-75F degrees at night are fine for these snakes, but they like daytime temps of 80-85F degrees with an 88-95F degree hot spot. The spotted pythons do not need high humidity."
If this is incorrect please correct my temps.