I would really like to get a Gree Tree Python

[Valentine Pirate]

I think it depends on the ambient environment, to be honest.

Definitely. It is similar to the discussions pertaining to open rack systems with an ambient acceptable temperature vs racks that are more of a closed style and don't necessarily need the room to be heated. Different species and caging system, but similar themes.

I'd say stick to guidelines that are given by reliable books and people with experience, then work out the tweaks that make it a good environment for your animals and you. Knowing the house I live in and what kinds of options I have with where my animals can be kept, I'd go with an enclosed PVC cage with heat panels and t-stat, but that's because I'm in a cold, dry climate in a poorly insulated house. No go for screen cages with me, everything is enclosed with strict temperature and humidity monitoring daily or even a couple times during the day