Can ball pythons safely climb branches thinner then them?

[Hugsplox]

I mean people use branches all the time. Especially with naturalistic and bioactive enclosures and they don't really clean them.
And securing it by bolting it down.
I am not so worried he'd hurt himself by falling down, there will be plenty of bedding and I don't put it high up.
I just wanted to know if he can fit on the branch comfortably when he's older.
And I feel like providing climbing branches is a better solution for him than not, since he will climb anyway and I guess it's better than climbing the walls were he regularly looses his grip.

Not sure where you're getting that people don't clean wood in their enclosures but I'm going to have to disagree with you. I think to Dakski's point, using something like PVC is easier to clean therefore easier to use. He's not saying people don't use them, I have branches in my BP enclosure, but they are incredibly time consuming to clean and because wood is porous you have to be very careful about what products you use on them. Like Dakski said, BPs will climb but they're not super adept at it, so I wouldn't put anything that takes them more than a few inches off the ground. My male has plenty of "climbing" opportunity in his enclosure, but nothing that's going to put him up high enough to hurt himself, and nothing that needs to be bolted down.