With my implementation, I can check
assert int | None == None | int
is true

Le lun. 2 sept. 2019 à 13:32, Ivan Levkivskyi <[email protected]> a
écrit :

> On Thu, 29 Aug 2019 at 23:48, Guido van Rossum <[email protected]> wrote:
>
>> On Thu, Aug 29, 2019 at 3:33 PM Chris Angelico <[email protected]> wrote:
>>
>>> On Fri, Aug 30, 2019 at 8:28 AM Guido van Rossum <[email protected]>
>>> wrote:
>>
>> [...]
>>
>>
>> I do tink we should probably review PEP 585 before doing anything about
>> unions specifically -- likely there are bigger fish to fry. (And PEP 585
>> has not received much discussion.)
>>
>
> I also agree with this. Generally I am fine with Union[int, str] and
> Optional[int], but I also see how some people might want a shorter
> notation. Many things around typing have been previously
> rejected because we didn't want to introduce any (or at least minimal)
> changes to the syntax and runtime, but now that typing is much more widely
> used we can reconsider some of these.
> Importantly, I think this should be done in a systematic way (potentially
> using PEP 585 draft as a starting point).
>
> --
> Ivan
>
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