[Python-Dev] PEP 572: Assignment Expressions (original) (raw)

Chris Angelico rosuav at gmail.com
Fri Apr 20 16:12:28 EDT 2018

On Sat, Apr 21, 2018 at 6:04 AM, David Mertz <mertz at gnosis.cx> wrote:

It's horrors like this:

g(items[idx] := idx := f()) That make me maybe +0 if the PEP only allowed simple name targets, but decisively -1 for any assignment target in the current PEP.

But that's my point: you shouldn't need to write that. Can anyone give me a situation where that kind of construct is actually useful? Much more common would be to use := inside the square brackets, which makes the whole thing a lot more sane.

You can ALWAYS write stupid code. Nobody can or will stop you.

ChrisA

More information about the Python-Dev mailing list