Moved ball Python from a box to a terrarium, he is more out from the cave now

[Bogertophis]

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Now the opening in the terrarium is at front, so if he have his head pointing forward i just wondered if he could give me a bite to warn me. Would try to get him from behind like zinsubus said if it’s possible

As Zincubus said. It's just like working with dogs who don't know you...dogs want (& need) to sniff you but you risk a bite (typically a very small %) by just offering
your hand, but another way to accomplish the same thing (without risk to your hand & that actually WORKS with MOST dogs) is to extend a tennis ball that is mounted
on a stick instead of your hand: they sniff the ball as an extension of you, & actually many of them also recognize the ball as a toy & want to play. Snakes aren't
going to play with your snake hook (or other item used) but the harmless touch &/or scent does distract them, re-assures them & establishes that you aren't prey. Make
sure your hook has no prey scent on it, btw.

The more you use the best senses of a snake (touch & scent, NOT vision!) to let them know what's going on, the fewer mistakes they'll make (the fewer bites you'll get).