I feel like this could have some interesting side uses (typing on mobile so
ignore the crappy indentation):
with Namespace('a'):
x = 1
y = 2
print(a.__dict__) # we now have a dict
The GN build system flat-out has no dictionary / mapping type in favor of
scopes like this.
On Sun, Jul 28, 2019, 9:36 PM Steven D'Aprano <st...@pearwood.info> wrote:
> On Fri, Jul 26, 2019 at 10:52:46AM -0400, Calvin Spealman wrote:
>
> > Let's say you do this or any of the variants suggested... What does this
> do?
> >
> > a = {"foo": 1}
> > b = {}
> > with a:
> > with b:
> > foo = 0
>
> Re-writing that to my suggested version:
>
> with namespace("a") as a:
> with namespace("b") as b:
> foo = 0
>
> will create a namespace object (a subclass of ModuleType) and bind it to
> "a", containing a namespace object "b", containing a variable "foo":
>
> assert isinstance(a, NamespaceType)
> assert isinstance(a.b, NamespaceType)
> assert a.b.foo == 0
>
>
> That would be analogous to this existing code:
>
> class a:
> class b:
> foo = 0
>
>
> except classes have different scoping rules to modules.
>
>
> --
> Steven
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