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[Python-ideas] PEP draft: context variables

Koos Zevenhoven k7hoven at gmail.com
Tue Sep 5 12:12:00 EDT 2017 
On Tue, Sep 5, 2017 at 6:53 PM, Yury Selivanov <yselivanov.ml at gmail.com>
wrote:

> On Tue, Sep 5, 2017 at 8:35 AM, Koos Zevenhoven <k7hoven at gmail.com> wrote:
> > On Tue, Sep 5, 2017 at 3:49 AM, Nathaniel Smith <njs at pobox.com> wrote:
> [..]
> >>
> >> I think PEP 550 is sufficient to allow implementing all
> >> your proposed APIs (and that if it isn't, that's a bug in PEP 550).
> >
> >
> > That's not true either. The LocalContext-based semantics introduces scope
> > barriers that affect *all* variables. You might get close by putting just
> > one variable in a LogicalContext and then nest them, but PEP 550 does not
> > allow this in all cases. With the addition of PEP 521 and some trickery,
> it
> > might.
>
> I think you have a wrong idea about PEP 550 specification.  I
> recommend you to reread it carefully, otherwise we can't have a
> productive discussion here.
>
>
I'm sorry, by LocalContext I meant LogicalContext, and by "nesting" them, I
meant stacking them. It is in fact nesting in terms of value scopes.

––Koos​


-- 
+ Koos Zevenhoven + http://twitter.com/k7hoven +
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