[Python-Dev] PEP 572 contradicts PEP 3099 (original) (raw)

Chris Angelico rosuav at gmail.com
Sat Apr 28 23:42:30 EDT 2018

On Sun, Apr 29, 2018 at 1:11 PM, Alex Walters <tritium-list at sdamon.com> wrote:

-----Original Message----- From: Python-Dev <python-dev-bounces+tritium-_ _list=sdamon.com at python.org> On Behalf Of Greg Ewing Sent: Saturday, April 28, 2018 10:53 PM To: 'Python-Dev' <python-dev at python.org> Subject: Re: [Python-Dev] PEP 572 contradicts PEP 3099 Alex Walters wrote: > PEP 3099 is the big list of things that will not happen in Python 3. > > "There will be no alternative binding operators such as :=." The thread referenced by that is taling about a different issue, i.e. using a different symbol to rebind names in an outer scope. Yeah, that's not really the issue, if there is an issue - just the wording of direct assertion. I'm just adding to the list of things that need to be touched if 572 is accepted, and that includes clarifying what was meant by that.

I'm not sure that it matters. PEP 3099 states a number of changes that were not going to happen in Python 3000, which we now know as Python 3.0. That's still true even if Python 3.8 gains a feature. (Though most of the rejected proposals are sufficiently backward-incompatible that they're almost certainly going to remain rejected.)

ChrisA

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