Be careful what's in the other tabs -- you did already make sure anything NSFW is only logged in on your phone, which has notifications silenced on the lock scr

Be careful what's in the other tabs -- you did already make sure anything NSFW is only logged in on your phone, which has notifications silenced on the lock screen in case your... partner or whatever... sends you a photo... right? And yes, a short Python task is a good idea. Treat it like an interview -- get breakfast with him, tell him about the company, then let him try to program while you do email. And otherwise, be very careful what you say, they will repeat it back to whoever they want, because they are minors and thus not subject to whatever weird NDAs you give them. (You'll probably want to write yourself a script.)