What is the recommended way to use Vim folding for Python code

I use this syntax file for Python. It sets the folding method to syntax and folds all classes and functions, but nothing else.

Personally I can't convince myself to litter my code with the markers. I've become pretty used to (and efficient) at using indent-folding. Together with my mapping of space bar (see below) to open/close folds and the zR and zM commands, I'm right at home. Perfect for Python!

set foldmethod=indent
nnoremap <space> za
vnoremap <space> zf