For a property setter, you have to give the method the same name as the original property, otherwise it mysteriously breaks. Here for singledispatchmethod they give it the name _. Why no consistency? Such things seem ad-hoc in python. (This criticism comes from an avid Python user.)

`singledispatchmethod` definitely looks useful.

The name isn't great, though. It actually offers double dispatch, not single dispatch! `divider.divide(10, 2)` first dispatches on `divider`, then on `10`.

As so often with Python, I'm left wondering why they didn't follow through and properly complete the design, in this case perhaps offering multiple dispatch (multimethods) instead of just double dispatch. Casting an eye over the functools code, it looks like they have all the necessary C3 infrastructure in there.

Though I'm guessing it won't get as much use now pattern matching has arrived and is a more general way of achieving the same thing.

I've been making extensive use of it lately; it's treating me quite well.