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

Date	2013-02-06 18:08 -0700
From	Michael Torrie <torriem@gmail.com>
Subject	Re: best way to share an instance of a class among modules?
References	(1 earlier) <mailman.1401.1360127082.2939.python-list@python.org> <5db4add7-ab9c-4311-b3b6-24156cd6f248@z4g2000vbz.googlegroups.com> <5112EF48.6040404@gmail.com> <mailman.1433.1360196074.2939.python-list@python.org> <ef7640df-034a-4c20-a58a-53117c6f4a56@cd3g2000vbb.googlegroups.com>
Newsgroups	comp.lang.python
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On 02/06/2013 05:45 PM, CM wrote:
> 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?

Oh I see.  You're trying to set a variable in the current module's
global namespace.  There's two ways to do this, the first one is cleaner
and preferred:

1.  Have a function in DatabaseAccess return the cursor then then set it
to a name in code that runs at the module level.

2. use the "global" keyword in the method:

def mymethod(self):
    global blah

    blah = something

Then your module has has blah in it's global method now.  If you want to
stick a variable in another method's global namespace, as long as you've
imported it you just go:

module.newvariable = something

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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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