[Python-Dev] PEP 492 vs. PEP 3152, new round (original) (raw)

Yury Selivanov yselivanov.ml at gmail.com
Wed Apr 29 15:55:25 CEST 2015

On 2015-04-29 5:12 AM, Greg Ewing wrote:

Yury Selivanov wrote:

Looking at the grammar -- the only downside of the current approach is that you can't do 'await await fut'. I still think that it reads better with parens. If we put 'await' to 'factor' terminal we would allow

await -fut # await (-fut) Is there really a need to disallow that? It would take a fairly bizarre API to make it meaningful in the first place, but in any case, it's fairly clear what order of operations is intended without the parens.

Greg, if grammar can prevent this kind of mistakes - it should. I like my current approach.

Yury

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