What is the best type of bedding is best for a ball python

[Wideload319]

Depends on any factors you didn't reveal...
What type of enclosure to start?

Repti zoo 48x18x18 encloser with bedding is aspen soon to be repti chip coconut chip 32oz water dish 88 to 90 degrees on the hot side 78 to 82 cold side. humidity 45 50 right now

Have stuff coming to make a humid hide for them.