Dynamically adding methods to objects?

[Jacek Generowicz]

Carl Banks <imbosol at aerojockey.invalid> writes:

> John Roth wrote:
> > "Holger T?rk" <htx1 at gmx.de> wrote in message
> > news:c9um21$hca$03$1 at news.t-online.com...
> >> damian birchler wrote:

[ f = Foo() ]

> >> > I know how to do it manually, I just define a function and assigne it
> >> > to f -
> >> >
> >> > def bar():
> >> >   pass
> >> >
> >> > f.bar = bar -,
> >> > but what if this should be done at runtime. How can I get the string
> >> > passed to f.add_function as name to be the name of a new function in
> >> > the function's definiton?
> >>
> >> f.bar = bar   is the same as   setattr (f, "bar", bar)
> >>
> >> Remember that bar does not become a method of f, but remains
> >> only a function which is stored in f. Is not subject of the
> >> binding of the "self" parameter.
> > 
> > Ah, but that's what I want to do - have a ***method***
> > where the self parameter works the way I expect it to.
> 
> 
> Is this what you want?
> 
>     def selfize(obj,func):
>         def callfunc(*args,**kwargs):
>             func(obj,*args,**kwargs)
>         return callfunc
> 
>     f.bar = withself(f,bar)

What's "withself" ?

Isn't John saying he wants exactly what the instancemethod function in
the new module was designed for:

    import new
    f.bar = new.instancemethod(bar, f, Foo)


?