[Python-Dev] Concurrent.futures: no type discovery for PyCharm

[Andrew Svetlov]

I see the chicken and egg problem here.
If we are talking about typing module usage -- typeshed is the type
hints provider.
If PyCharm doesn't want to use it -- it is not CPython problem.

I think there is no need to change python code itself but used tooling.

On Mon, Apr 22, 2019 at 11:06 PM Brett Cannon <brett at python.org> wrote:
>
>
>
> On Sat, Apr 20, 2019 at 2:10 PM Inada Naoki <songofacandy at gmail.com> wrote:
>>
>> "import typing" is slow too.
>
>
> But is it so slow as to not do the right thing here and use the 'typing' module as expected? If you have so much work you need to launch some threads or processes to deal with it then a single import isn't going to be your biggest bottleneck.
>
> -Brett
>
>>
>>
>> 2019年4月21日(日) 1:43 Ilya Kamenshchikov <ikamenshchikov at gmail.com>:
>>>
>>> alright, so would an import under TYPE_CHECKING guard be an option? like:
>>>
>>> from typing import TYPE_CHECKING
>>> if TYPE_CHECKING:
>>>     from .process import ProcessPoolExecutor
>>>     from .thread import ThreadPoolExecutor
>>>
>>>
>>> Perhaps we can have both clarity and performance.
>>
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-- 
Thanks,
Andrew Svetlov