I'm new to DrPython but think it looks great (Mac OS X 10.3)
I'm very partial to folding.
1) I can turn folding on or off in the preferences but the Folding |> item in the View menu seems to be chronically greyed out.
2) what would it take to associate folding of a specific line with a keystroke?
1) That's not good. I do not notice this myself however. Did you forget to click the update button perhaps?
2) Probably not too much work. I will put this on for inclusion in 3.8.0. (Toggle Fold/Unfold).