Message 196137 - Python tracker

> I still think IncrementalParser is worth keeping.

If you want to keep it at all cost, I think we should at least hide it behind a function (as with iterparse()). If it's implemented as a class, chances are that people will start relying on internals by inheriting from it. And we already know that those internals should eventually be removed completely. Eventually, that function should become a two-liner or so.