Diamond pythons need to be kept at temperatures that are lower than your average carpet python variety. Some morelia varieties like RSPs and Centralians can handle a 40 degree hot end without any trouble, whereas Jungles, Greens, Murray Darlings, and Coastals would prefer around 35 degrees max. Diamonds prefer a hot end of 32, I'd say they could handle 35, but as a rule I'd keep it at 32. The cool end for diamonds is also a lot more forgiving than for other morelia. Diamonds generally handle a range from 18 to 32 degrees which is a fairly wide temperature range (14 degrees). Most other morelia range from 25 to 35 degrees, with some ramping up to 40 degrees - especially those varieties from arid climates.