[Python-ideas] A "within" keyword

[Michael Selik]

You can use ``eval`` to run an expression, swapping in a different globals
and/or locals namespace. Will this serve your purpose?

In [1]: import types
In [2]: ns = types.SimpleNamespace(a=1)
In [3]: eval('a', ns.__dict__)
Out[3]: 1

https://docs.python.org/3/library/functions.html#eval

On Fri, Jun 8, 2018 at 11:43 AM David Teresi <dkteresi at gmail.com> wrote:

> One of the features I miss from languages such as C# is namespaces that
> work across files - it makes it a lot easier to organize code IMO.
>
> Here's an idea I had - it might not be the best idea, just throwing this
> out there: a "within" keyword that lets you execute code inside a
> namespace. For example:
>
> # A.py
> import types
> cool_namespace = types.SimpleNamespace()
>
> within cool_namespace:
>     def foo():
>         print("foo run")
>
> #B.py
> import A
> within A.cool_namespace:
>     foo() # prints "foo run"
>
> Thoughts?
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