[Python-Dev] Pep 550 and None/masking

Chris Jerdonek chris.jerdonek at gmail.com
Sun Aug 27 14:02:50 EDT 2017

Hi Jim, it seems like each time you reply you change the subject line and
start a new thread. Very few others are doing this (e.g. Yury when
releasing a new version). Would it be possible for you to preserve the
threading like others?


On Sun, Aug 27, 2017 at 9:08 AM Jim J. Jewett <jimjjewett at gmail.com> wrote:

> Does setting an ImplicitScopeVar to None set the value to None, or just
> remove it?
> If it removes it, does that effectively unmask a previously masked value?
> If it really sets to None, then is there a way to explicitly unmask
> previously masked values?
> Perhaps the initial constructor should require an initial value
>  (defaulting to None) and the docs should give examples both for using a
> sensible default value and for using a special "unset" marker.
> -jJ
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