Also, let me be clear that this feature will never be added to the language.

On Mon, Jul 20, 2020 at 07:36 Guido van Rossum <guido@python.org> wrote:
On Mon, Jul 20, 2020 at 03:22 Jonathan Fine <jfine2358@gmail.com> wrote:
This is a continuation of my previous post to this thread.

Python's FOR ... ELSE ... , Raymond Hettinger has told us, has origins in some ideas of Don Knuth. 

That’s news to me (both that it’s due to Knuth and that Raymond said so). I invented it without awareness of prior art, by reasoning about the similarity between IF and WHILE (FOR followed from WHILE).

—Guido
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--Guido (mobile)