[Python-ideas] A "within" keyword

[Jelle Zijlstra]

2018-06-08 20:27 GMT-07:00 Alex Walters <tritium-list at sdamon.com>:

> Why not...
>
> cool_namespace = SomeNamespaceContextManager()
>
> with cool_namespace:
>     def foo():
>         pass
>
> advantage being it introduces no new keyword.  The 'disadvantage' is it
> would change semantics of the with statement (as would be required to get
> the names defined in the suite of the context manager)
>
> Actually, this is probably doable now. You can get the globals of the
calling code by doing sys._getframe(), then check which names are added
while the context manager is active.

>
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