overwrite set behavior

[Marco Bizzarri]

Ciao, Michele:

On Thu, Sep 4, 2008 at 11:48 AM, Michele Petrazzo
<michele.petrazzo at togliunipex.it> wrote:
> Hi all, I want to modify the method that set use for see if there is
> already an object inside its obj-list. Something like this:
>
> class foo: pass
>
> bar1 = foo()
> bar1.attr = 1
>
> bar2 = foo()
> bar2.attr = 1
>
> set( (bar1, bar2), key=lambda o: o.attr)
>
> and, of course, set has only one value.
>
> It's possible?
>
> Thanks,
> Michele
> --
> http://mail.python.org/mailman/listinfo/python-list
>

looking at the source, maybe you could create a subclass of Set
redefining the __contains__ method?

Regards
Marco


-- 
Marco Bizzarri
http://notenotturne.blogspot.com/
http://iliveinpisa.blogspot.com/