I don't know where you people get the idea that a 6" tall tub is adequate housing for a ball python (or any snake with the exception of sand boas). Mine are climbing all of the time that they are active, usually at night within 24 hours of feeding. Sure, they can live in it, but are they happy in those things? I know, I know, "Yes! Yes!" you scream.
Because it's easy for you to clean, and cheap for you to buy, and easy for you to setup. I didn't ask if it was good for you however.
But they eat like crazy! And breed like crazy!
Want to make a human never miss a meal? And screw anything that comes its way? Put it in prison.
Chris