Kira

Actually, the reason I encountered the original issue was because `find()` worked with a root object that was the wrong type; I'd passed the constructor an `ElementTree.ElementTree` instead of a...

Could we at least put these checks in `write` itself so it will fail a little more gracefully in that condition? It's going to error in both cases, but it...

At this point I suppose I'd like some guidance on which path is most acceptable; put the PR back in its original state (`iselement` unaltered, keep the type check I...

@serhiy-storchaka hmm I see, do you suggest doing something differently overall? It does narrow the opportunities for the initial problem in a fairly low-overhead way in its present state, which...