static methods and meta classes

[Rod Mancisidor]

For reasons that are a bit complicated to explain I have developed a program
that passes classes around quite a bit as parameters.  I now need to
associate methods that can be invoked on the class objects themselves as
opposed to the instances of the class.  As an example, for a given class:

class Foo:
    def f(self, param): return param + 1

I need to invoke Foo.f(10).  This obviously won't work given that f is not a
static method.  So I thought I could to this:

class MetaFoo:
    def f(self, param): return param + 1

class Foo:
    __class__ = MetaFoo

In the hope that python could think of Foo as a class that is also an
instance of MetaFoo and allow me to invoke:

Foo.f(10)

This does not work.  I wonder why, every other undocumented crazy thing I
have tried in Python works.  Does anyone know how to trick Python into
supporting static methods?

If you have a reply and can also send it to rod at mancisidor.com I would
appreciate it.

Thanks