I've been bitten so many times by my tanimbar python that I lost track so then I decided to wear gloves, since I already know she'd bite me anyway. :/ My GTP has attempted three times but she's dumb and misses and bites the perch or herself instead LOL, which is frequent considering I only take her out like twice a year. It's not really psychology, it's that I already know they're going to bite me without a doubt ahah.
And craig, for some reason I've found that the gloves keep them calmer and they don't act up or get as nervous when I handle with gloves, I guess because the temp isn't super warm like my skin. My skin temp seems to be what makes my tanimbar python tick. So they've never actually bitten the gloves.