That's a mypy-specific hack, not something that's guaranteed by a PEP --
but it works great with mypy!


On Mon, Jan 18, 2021 at 4:40 PM Brandt Bucher <brandtbuc...@gmail.com>
wrote:

> Doesn't explicitly setting it yourself still work?
>
> ```
> TYPE_CHECKING = False
>
> if TYPE_CHECKING:
>     import xxx  # modules used only in type hints.
> ```
>
> This seems to work for mypy, at least. Even just doing `if False:` works
> correctly (and is arguably the most efficient at runtime).
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