Oops, meant for the list:
> >>
> >> > Chris seems to accept that sometimes you can use a dict subclass, and
> >> > that my proposal will give some representation of "practical
> >> > experience".
> >>
> >> I said "definitely won't", not "will give some". So, no.
> >
> >
> > Jonathan: Chris A. is r
>> On Mar 21, 2019, at 16:55, Steven D'Aprano wrote:
>>
>> On Thu, Mar 21, 2019 at 03:10:48PM -0700, Brandt Bucher wrote:
>> For anyone interested in "trying it out": if you're not against cloning and
>> compiling CPython yourself, here is a PEP 584 C implementation I have PR'd
>> against master
04.03.19 15:43, Serhiy Storchaka пише:
01.03.19 12:44, Steven D'Aprano пише:
On Fri, Mar 01, 2019 at 08:47:36AM +0200, Serhiy Storchaka wrote:
Also, if the custom dict subclass implemented the plus operator with
different semantic which supports the addition with a dict, this change
will break
On Fri, 22 Mar 2019 at 07:46, Terry Reedy wrote:
> On 3/22/2019 12:53 AM, Steven D'Aprano wrote:
> > If a+b already worked for dicts, would you still prefer {**a, **b}?
>
> Example: {**sys.modules, **globals()}
>
> Aside from the fact that I can patch *and* backport to 3.7 *now*, I
> think so. T
On Fri, Mar 22, 2019 at 07:59:03AM +, Jonathan Fine wrote:
> Steven D'Aprano wrote:
>
> > (For the record, the PEP isn't set in stone in regards to the choice of
> > operator.
>
> Steven: Please say what parts of the PEP you consider to be set in
> stone. This will allow discussion to focus o
Python fits well in the mind, because (1) by design it reduces
cognitive load, and (2) it encourages its users to reduce cognitive
load, and (3) we have a culture of reading code, taking pride in our
code. Readability counts.
https://en.wikipedia.org/wiki/Cognitive_load
Steven D'Aprano says that e
Steven D'Aprano wrote:
> (For the record, the PEP isn't set in stone in regards to the choice of
> operator.
Steven: Please say what parts of the PEP you consider to be set in
stone. This will allow discussion to focus on essentials rather than
details.
--
Jonathan
_
On Fri, Mar 22, 2019 at 6:47 PM Jonathan Fine wrote:
>
> Chris Angelico wrote:
>
> > The trouble with that is that you can't always use a dict subclass (or
> > a non-subclass MutableMapping implementation, etc, etc, etc). There
> > are MANY situations in which Python will give you an actual real d
On Fri, Mar 22, 2019 at 1:58 PM David Mertz wrote:
>
> On Thu, Mar 21, 2019, 10:15 PM Steven D'Aprano wrote:
>> > Of course I could learn it and teach it, but it will always feel
>> > like a wart in the language.
>>
>> Would that wartness be lessoned if it were spelled | or << instead?
>
> Yes, d
Chris Angelico wrote:
> The trouble with that is that you can't always use a dict subclass (or
> a non-subclass MutableMapping implementation, etc, etc, etc). There
> are MANY situations in which Python will give you an actual real dict,
> and it defeats the purpose if you then have to construct a
On 3/22/2019 12:53 AM, Steven D'Aprano wrote:
On Thu, Mar 21, 2019 at 09:36:20PM -0400, Terry Reedy wrote:
I counted what I believe to be 10 instances of copy-update in the top
level of /lib. Do either of you consider this to be enough that any
addition would be worthwhile.
I think you're re
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