[Python-Dev] PEP 567 v2

[Nathaniel Smith]

On Thu, Dec 28, 2017 at 1:51 AM, Victor Stinner
<victor.stinner at gmail.com> wrote:
> var = ContextVar('var', default=42)
>
> and:
>
> var = ContextVar('var')
> var.set (42)
>
> behaves the same, no?

No, they're different. The second sets the value in the current
context. The first sets the value in all contexts that currently
exist, and all empty contexts created in the future.

-n

-- 
Nathaniel J. Smith -- https://vorpus.org