accessing a functions var from a subfunction.

[Sebastian Wilhelmi]

Hi Alex,

Alex Martelli <aleax at aleax.it> wrote:
> Sebastian Wilhelmi wrote:
> 
> > Hi,
> > 
> > I would like to do the following:
> > 
> > -------8<-------8<-------8<-------8<-------
> > def test ():
> >     count = 0
> >     def inc_count ():
> >         count += 1
> >     inc_count ()
> >     inc_count ()
> >     print count
> > 
> > test ()
> > -------8<-------8<-------8<-------8<-------
> > 
> > This doesn't work (and I even understand, why ;-)
>
> Depends on your tastes in syntax, e.g.:
> 
> def test():
>     class Bunch: pass
>     loc = Bunch()
>     loc.count = 0
>     def inc_count():
>         loc.count += 1
>     inc_count()
>     inc_count()
>     print loc.count

Not my taste ;-)

> def test():
>     test.count = 0
>     def inc_count():
>         test.count += 1
>     inc_count()
>     inc_count()
>     print test.count

Ah, thats great. I tested this, but without the first 'test.'
qualifier, so it didn't work, but this solution is exactly, what I am
looking for.

> Class Bunch (or some highly refined version thereof) IS typically
> around whenever I program, see for example:
> 
> http://mail.python.org/pipermail/python-list/2002-July/112007.html
> 
> for a typical presentation.  Having available the MetaBunch there
> described, I'd start the function as follows:
> 
> def test():
>     class Bunch(MetaBunch): count=0
>     loc = MetaBunch()
>     def inc_count():
>         loc.count += 1

Nice construct. Thanks for your help.
 
Bye,
Sebastian