On 5/20/21 10:47 AM, David Mertz wrote:
> On Thu, May 20, 2021 at 6:21 AM Tal Einat wrote:
>> I think it's worth preserving the idiom of comparing sentinels using
>> `is`, as we do for `None` and other existing sentinel values. It's
>> relatively easy to do, such as by using a single-value Enum or by
>> using a class with a custom __new__.
>
>
> This only works if:
>
> a) Unpickling is within a single interpreter session
I don't understand. If I pickle a sentinel in session A, then unpickle it in session B, why wouldn't I get the "same"
sentinel?
> b) Sentinels are explicitly created in imported modules, not as a runtime,
user-level creation
Why would you ever have a sentinel not always created?
Hoping-to-learn-something-new'ly yrs,
--
~Ethan~
_______________________________________________
Python-Dev mailing list -- python-dev@python.org
To unsubscribe send an email to python-dev-le...@python.org
https://mail.python.org/mailman3/lists/python-dev.python.org/
Message archived at
https://mail.python.org/archives/list/python-dev@python.org/message/OLTV44EVHJL3C4AIFPGUINZAZNI3YNNK/
Code of Conduct: http://python.org/psf/codeofconduct/
