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Re: best way to share an instance of a class among modules?

Newsgroups comp.lang.python
Date 2013-02-06 16:45 -0800
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Message-ID <ef7640df-034a-4c20-a58a-53117c6f4a56@cd3g2000vbb.googlegroups.com> (permalink)
Subject Re: best way to share an instance of a class among modules?
From CM <cmpython@gmail.com>

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I was using self correctly, I think; but I should have said that the
code in the importing module would be within a class, so self there
refers to that class.  But that's a side point.

I agree that utilities.shared_cursor is visible within the importing
module.  But the problem below remains for me...

> > My only problem, then, is I create the shared_cursor from within a
> > function within the instance of DatabaseAccess().  How then do I pass
> > it from within the function's namespace to the module's namespace so
> > that I can do that first line?

> Every function in a module has access to the module's global namespace.
>  And your shared_cursor is there, inside of the utilities reference,
> since utilities was imported into your module, "importer."

But the function in the module is also within a *class* so I don't
think the function does have access to the module's global namespace.
Here's the hierarchy:

-- Module namespace....
    ---- class namespace (DatabaseAccess is the name of the class)
         ---- function namespace
              This is where the cursor is created.  How do I get it
into the module namespace?

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Thread

best way to share an instance of a class among modules? CM <cmpython@gmail.com> - 2013-02-05 20:40 -0800
  Re: best way to share an instance of a class among modules? Terry Reedy <tjreedy@udel.edu> - 2013-02-06 00:04 -0500
    Re: best way to share an instance of a class among modules? CM <cmpython@gmail.com> - 2013-02-06 14:41 -0800
      Re: best way to share an instance of a class among modules? Michael Torrie <torriem@gmail.com> - 2013-02-06 17:03 -0700
        Re: best way to share an instance of a class among modules? c <chaelon@gmail.com> - 2013-02-06 16:43 -0800
          Re: best way to share an instance of a class among modules? Ethan Furman <ethan@stoneleaf.us> - 2013-02-06 16:57 -0800
          Re: best way to share an instance of a class among modules? Ethan Furman <ethan@stoneleaf.us> - 2013-02-06 17:36 -0800
            Re: best way to share an instance of a class among modules? Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-07 18:14 -0800
              Re: best way to share an instance of a class among modules? Michael Torrie <torriem@gmail.com> - 2013-02-07 23:05 -0700
              Re: best way to share an instance of a class among modules? Michael Torrie <torriem@gmail.com> - 2013-02-08 21:54 -0700
            Re: best way to share an instance of a class among modules? Rick Johnson <rantingrickjohnson@gmail.com> - 2013-02-07 18:14 -0800
      Re: best way to share an instance of a class among modules? Michael Torrie <torriem@gmail.com> - 2013-02-06 17:14 -0700
        Re: best way to share an instance of a class among modules? CM <cmpython@gmail.com> - 2013-02-06 16:45 -0800
          Re: best way to share an instance of a class among modules? Michael Torrie <torriem@gmail.com> - 2013-02-06 18:08 -0700

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