On Sat, Apr 20, 2019 at 2:10 PM Inada Naoki <songofacandy@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@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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