Knowing their size helps you plan. You’ll need a secure lid because a 4-foot snake can escape through a half-inch gap. They are Houdini-level escape artists. A bigger enclosure means a higher price for equipment, but nothing insane.
Also, a big ball python means more poop. Yes, it’s a topic. A 5-foot snake produces grapefruit-sized poops every week or two. Be prepared. You didn’t think this was all glamour, did you?