replacing instance __setattr__

[Jeff Epler]

Uh, scratch that -- obviously I missed the point of this conversation.

Jeff

On Fri, Jul 05, 2002 at 01:27:33PM -0500, Jeff Epler wrote:
> On Fri, Jul 05, 2002 at 04:45:45PM +0000, Alex Martelli wrote:
> > This doesn't impede your abilities to customize an instance, without
> > affecting other instances of the same class:
> > 
> > def changeSpecial(inst, name, function):
> >     class Customized(inst.__class__): pass
> >     setattr(customized, name, function)
> >     inst.__class__ = Customized
> 
> why not
>     def changeSpecial(inst, name, function):
> 	method = new.instancemethod(function, inst, inst.__class__)
> 	setattr(inst, name, method)
> 
> >>> def f(self, x): print x
> ...
> >>> class C: pass
> ...
> >>> c = C()
> >>> changeSpecial(c, 'f', f)
> >>> c.f(3)
> 3
> 
> No setting of the __class__ attribute here, which is something that
> gives me more willies than calling new.instancemethod and doing a
> setattr on the instance...
> 
> Jeff
> 
> 
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