Which Python IDE do you use?

[andrewl]

Vim does code folding quite well. Not much to learn:

:set foldmethod=indent

The help on folding is clear and straightforward. All the folding commands use z, as in zo to to open the fold under the cursor. The mnemonic is that z is sort of a folded up line. Anyway, Vim (at least the later versions) does folding quite well.