substitution of a method by a callable object

[Terry Reedy]

netimen wrote:
> Can I substitute a method of a class by a callable object (not a
> function)? I can very easy insert my function in a class as a method,
> but an object - can't.

Yes you can and did.

> class Foo(object):
>     pass
> 
> class Obj(object):
>     def __call__(self, obj_self):
>         print 'Obj'
> 
> def func(self):
>     print 'func'
> 
> f = Foo()
> Foo.meth = func
> f.meth() # all goes OK
> Foo.meth = Obj()
> f.meth() # I get TypeError: __call__() takes exactly 2 arguments (1
> given)

So either remove the unused obj_self parameter from __call__ or pass 
something -- anything -- to be bound to it.
f.meth(1) for instance, works fime (in 3.0 at least)