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Thu Apr 26 11:07:50 EDT 2018 · http://mail.python.org/pipermail/python-dev/2018-April/153122.html

Just as I feared. While currently fixing this is just fixing a bug
(nobody's code is going to break except perhaps some tests), with PEP 572
fixing this would be mandatory.

On Thu, Apr 26, 2018 at 6:57 AM, Nick Coghlan <ncoghlan at gmail.com> wrote:

> On 25 April 2018 at 18:23, Chris Angelico <rosuav at gmail.com> wrote:
> >>>> x={print(2): print(1) for _ in [1]}
> > 1
> > 2
> >
> > Hmmmmmmmmm. One of these is not like the others...
>
> Huh, it looks like we missed checking dict comprehensions when we
> fixed dict displays to evaluate keys before the corresponding values.
> That would qualify as a reasonable request for improvement in Python
> 3.8 :)
>
> Cheers,
> Nick.
>
> --
> Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia
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-- 
--Guido van Rossum (python.org/~guido)
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[Python-Dev] The new and improved PEP 572, same great taste with 75% less complexity!