[Python-Dev] functools.compose to chain functions together

["Martin v. Löwis"]

> The reason I came across the old patch was because I was searching
> for something that did exactly what compose does. That is to say, I
> had a use case that was compelling enough that I thought there should
> be something in functools to do what I wanted.  I've encountered this
> pattern often enough that it might be in the stdlib.

Can you kindly give one or two examples of where compose would have been
useful?

Regards,
Martin