__getattribute__ meta class?

[bambam]

I have a class containing a series of classes like this:

class Th(Externaldevice):
  class _Communicate(commandset2.CommandSet_Communicate):
    def __getattribute__(self,attrname):
      attr = 
commandset2.CommandSet_Communicate.__getattribute__(self,attrname)
      if "__call__" in dir(attr):
        return functools.partial(Th._wrapper_function, self.parent, attr)
      else:
        return attr

  class _System(commandset2.CommandSet_System):
    def __getattribute__(self,attrname):
      attr = commandset2.System_Communicate.__getattribute__(self,attrname)
      if "__call__" in dir(attr):
        return functools.partial(Th._wrapper_function, self.parent, attr)
      else:
       return attr

That is, a a wrapper function is applied to a bunch of methods in a bunch of 
classes.
The class declarations are simple, but even so, repetitive.
Can anyone suggest a more compact representation for the class declarations?
Also, because the parent class name is given explicitly in the class 
declarations, I can't over-ride the _wrapper_function in a child class, 
except by over-riding each of the class declarations. Is there a way to 
reference the _wrapper_function just to the containing class?

Steve