[python-committers] Poll: Do you like the PEP 572 Assignment Expressions? (original) (raw)

M.-A. Lemburg mal at egenix.com
Wed May 2 09:11:32 EDT 2018

-1 in the current form, since an expression such as

[y := f(x), x/y] ...

is confusing (I'd read this as [y := (f(x), x/y)]

Using explicit parens around it would resolve this issue:

[(y := f(x)), x/y] ...

but even with that, I'm not excited about the additional line noise this adds - there's a reason why we have for-loops in the language after all, explicit is better than having to look thrice, etc. etc. :-)

Cheers,

Marc-Andre Lemburg eGenix.com

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On 02.05.2018 11:49, Victor Stinner wrote:

Hi,

I would like to start a poll on Chris Angelico's PEP 572 "Assignment Expressions", restricted to Python core developers, to prepare the talk at the Language Summit: https://www.python.org/dev/peps/pep-0572/ The poll is on the current PEP. I propose 4 choices: * +1: you like the PEP * -1: you dislike the PEP * 0: you are not sure if you like it or not, or you have no opinon * don't reply to this poll :-) Just reply to this email with "+1", "0", "-1". Please don't elaborate here, it's just a quick poll, use python-dev if you want to talk :-) The poll will end next Tuesday, May 8, the day before the Language Summit. I propose a poll because I'm unable to track the opinion of each core dev, too many emails have been sent to python-dev, and maybe some people changed their mind during the long discussion (which started in February) :-) Note: Obviously, it's just a poll, not a vote. Guido van Rossum is the one who will pronounce himself on the PEP, to accept to reject it, so the only one allowed to vote ;-) Victor

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