1) Your answer to the first question after your talk will be simple, neat, and wrong.
2) That question will have been asked by Larry Hastings.
Extrapolation from my experience might fail in your particular circumstances because Larry isn't omnipresent. It might fail for my talks too: the pycon video archives only go back to last year.
NB "wrong" in the sense of "less than optimally correct." I included a fuller answer on my published slides both years. Which no one will see.