[Python-Dev] for...else

[Nick Coghlan]

On 25 July 2017 at 02:23, Ben Hoyt <benhoyt at gmail.com> wrote:
> This is more of a python-ideas discussion, and Steven's answer is good.
>
> I'll just add one thing. Maybe it's obvious to others, but I've liked
> for...else since I found a kind of mnemonic to help me remember when the
> "else" part happens: I think of it not as "for ... else" but as "break ...
> else" -- saying it this way makes it clear to me that the break goes with
> the else. "If this condition inside the loop is true, break. ... *else* if
> we didn't break, do this other thing after the loop."

For folks looking for a more in-depth explanation of the
"if-break-else" approach to thinking about this construct:
http://python-notes.curiousefficiency.org/en/latest/python_concepts/break_else.html

That article also has a note explaining that we're unlikely to ever
change this: http://python-notes.curiousefficiency.org/en/latest/python_concepts/break_else.html#but-couldn-t-python-be-different

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia