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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Project-wide variable...
Date: Fri, 24 Jun 2011 02:27:17 -0400
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:8350

On 6/23/2011 11:49 PM, Gnarlodious wrote:
> Let me restate my question.
> Say I have a script Executable.py that calls all other scripts and
> controls them:
>
> #!/usr/local/bin/python
> from Module import Data
> import ModuleTest
>
> ModuleTest.py has this:
>
> print(Data.Plist.Structure)
>
> Running Executable.py gives me this:
> NameError: name 'Data' is not defined
>
> 1) Can I tell Executable.py to share Data with ModuleTest.py?

After the import is complete, yes.
import ModuleTest
ModuleTest.Data = Data

This works if the use of Data is inside a function that is not called 
during import, not if the use of Data is at toplevel or in a class 
statement outside a def.

> or if that can't be done:
> 2) Can I tell ModuleTest.py to "look upstream" for Data?

Yes if ModuleTest imports Executable, but circular imports are a bad idea.


-- 
Terry Jan Reedy