For those who answered one:
How do you keep appropriate temperatures for the cool zone and ambient air temperature? Or do you feel having the appropriate temperature for only the hot zone is sufficient? Such that heat sources for the cool zone and ambient air temperature are unnecessary.

them ambient air temp is kinda regulated by itself, i have a small room and 8 animals in it with heat so that room get pretty warm around 75ish, then the heat source gets the opposite side of the tub above 80. the temp on the hot end is regulated by thermostat... all you need.

ambient air temp should be taken into account when you install your heat source. and every single place will be different, thats why some people have space heaters and some don't, tho i don't see a need to keep the room at 80, but i guess you can be sure your ball python will never get cold.