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From: Chris Angelico <rosuav@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: Namespaces are one honking great idea
Date: Tue, 5 Jul 2016 13:47:41 +1000
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On Tue, Jul 5, 2016 at 1:35 PM, Steven D'Aprano <steve@pearwood.info> wrote:
>> If you push your code into a separate .py file, you can reference the
>> original module by importing it. Is that also the normal way to use
>> "outer" functions etc from inside a namespace?
>
> Good question!
>
> With the current implementation, importing should work, but it's not
> necessary. The surrounding module (the real .py module) is inserted into
> the name resolution path of functions:
>
> py> x = 999
> py> @namespace.Namespace
> ... class Test:
> ...     def test():
> ...             print(x)
> ...
> py> Test.test()
> 999

Ah, fascinating. This does break the "just unindent and move to a new
file if you want to break it out" equivalency, but it does make sense
- it's a *nested* namespace, which modules (even in a package) are
not. So you have the outer namespace acting pretty much the way
builtins do. (Do nested namespaces work?)

ChrisA