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Partial 1.0 - Partial classes for Python

Carl Banks pavlovevidence at gmail.com
Wed Feb 7 10:17:40 EST 2007 
On Feb 7, 8:51 am, Thomas Heller <thel... at ctypes.org> wrote:
> Martin v. Löwis schrieb:
>
> > I'm happy to announce partial 1.0; a module to implement
> > partial classes in Python. It is available from
>
> >http://cheeseshop.python.org/pypi/partial/1.0
>
> > A partial class is a fragment of a class definition;
> > partial classes allow to spread the definition of
> > a class over several modules. One location serves
> > as the original definition of the class.
>
> > To extend a class original_module.FullClass with
> > an additional function, one writes
>
> > from partial import *
> > import original_module
>
> > class ExtendedClass(partial, original_module.FullClass):
> >      def additional_method(self, args):
> >          body
> >      more_methods
>
> > This module is licensed under the Academic Free License v3.0.
>
> > Please send comments and feedback to mar... at v.loewis.de
>
> Nice idea.

Indeed.  I was going to make a post asking for advice on high-level
delegation (basically you have a generic mostly-OO framework, which
the user extends mostly by subclassing, but how do the generic classes
know about the user-extened classes?).  I knew of many solutions, but
all had significant drawbacks.  But this seems like it'd work great,
maybe with a few minor inconveniences but nothing like the icky hacks
I've been using.

Ironic, since I myself posted a very simple example of how to do this
with a class hook here on c.l.python a while back.

But I'll have to review the license and see how it works with what I
have.


Carl Banks
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