You can provide all the husbandry requirements you'll need in a tub, it just won't look as pretty. They make large tubs that work for adult ball pythons.
You can use this one:
Or,in my opinion, a better choice is a Christmas tree tub:
https://www.walmart.com/ip/IRIS-Holi...x-Red/55526277
They sell them at a variety of places (Walmart, Lowes, Container Store, etc.) and they are only like $30-$40. They are roughly the same size as the two PVC enclosures I suggested previously (52" x 21" x 14").