First of all, you should definitely get a heat lamp to heat your ball python's cage more adequately. If you're on a budget, you can do like me and find 8.5" Clamp lights at home depot or lowe's and 75w infrared light bulbs from petsmart and it's a little cheaper than the name brand heat lamp fixtures available in the pet store. It's like $8 instead of $16+. You would also want to buy a rheostat/meter (aka table top light dimmer) to be able to control the amount of heat from the lamp. These run about $10-20 (table top dimmer being cheaper than zoo med's rheostat).

By the way, that light bulb can be either infrared or night, either works fine as long as it's not a visible (white) light bulb.