How can I define class methods outside of the class?

[Jeremy]

On Dec 2, 10:26 am, "bruno.desthuilli... at gmail.com"
<bruno.desthuilli... at gmail.com> wrote:
> On 2 déc, 15:45, Jeremy <jlcon... at gmail.com> wrote:
>
>
>
>
>
> > On Dec 1, 10:47 pm, James Mills <prolo... at shortcircuit.net.au> wrote:
>
> > > On Thu, Dec 2, 2010 at 3:36 PM, Jeremy <jlcon... at gmail.com> wrote:
> > > > I have some methods that I need (would like) to define outside of the
> > > > class.  I know this can be done by defining the function and then
> > > > setting it equal to some member of an instance of the class.  But,
> > > > because of the complexity of what I'm doing (I have to set many
> > > > functions as class methods) I would rather not do this.  Can someone
> > > > show me how to do this?  Is it even possible?  Can decorators be used
> > > > here?
>
> > > Do you mean something like this ?
>
> > > @classmethod
> > > def foo(cls):
> > >     print "I am the foo classmethod on %r" % cls
>
> > > class Foo(object):
> > >     pass
>
> > > Foo.foo = foo
>
> > > cheers
> > > James
>
> > Thanks, James.  That is almost exactly what I want.  However, I want to avoid doing
>
> > Foo.foo = foo
>
> > Is this going to be possible?  
>
> def patch(cls):
>    def _patch(func):
>        setattr(cls, func.__name__, func)
>        return func
>    return _patch
>
> class Foo(object): pass
>
> @patch(Foo)
> def bar(self):
>     print self
>
> f = Foo()
> f.bar()

Yes!  This is what I was looking for.  Thanks!

Jeremy