[Python-Dev] Should I postpone PEP 558 (locals() semantics) to Python 3.9?

Terry Reedy tjreedy at udel.edu
Fri May 31 12:43:20 EDT 2019

On 5/31/2019 6:20 AM, Nick Coghlan wrote:
> On Fri., 31 May 2019, 6:34 pm Nathaniel Smith, <njs at pobox.com 
> <mailto:njs at pobox.com>> wrote:
>     I wouldn't mind having a little more breathing room. It's frustrating
>     to miss the train, but these bugs are several decades old so I guess
>     nothing terrible will happen if their fixes get delayed to 3.9.


> And I could put that extra time to good use, as starting to flesh out 
> the proxy implementation showed that we're missing a lot of scaffolding 
> to help make it easier to define new low level mapping types without 
> duplicating a lot of code.
> I'll update the PEP headers accordingly.

I believe some of your suggested doc change is true now, will remain 
true, and improves on the current locals entry.  No PEP approval is 
needed for this much.

Terry Jan Reedy

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