2) I do use Python but mostly for administrative/deployment/similar tasks as a scripting language. I see no proof that Python is "several times more expressive". I would really appreciate if you could kindly point me to a real study that shows exactly how it is more expressive and on what in particular the time is saved (you can of course omit the examples where Python is used as a glue language to stitch together few math libraries written in C/++).
I do have my own experience. Of course it is statistically meaningless. My friend and I have implemented simple GUI desktop app (custom video player with some features) as a bet. My buddy did it in Python and I did it in Delphi. I won: 1 hour vs 4.