Language improvement: Get more from the `for .. else` clause

[Michael Selik]

On Mon, Jun 27, 2016 at 12:53 AM Victor Savu <victor.nicolae.savu at gmail.com>
wrote:

> capture the [StopIteration] value in the `else` statement of the `for` loop
>

I'm having trouble thinking of a case when this new feature is necessary.
Can you show a more realistic example?