Is there way to determine which class a method is bound to?

[Robin Becker]

Victor Ng wrote:
> I'm doing some evil things in Python and I would find it useful to
> determine which class a method is bound to when I'm given a method
> pointer.
> 
> For example:
> 
> class Foo(object):
>     def somemeth(self):
>         return 42
> 
> class Bar(Foo):
>     def othermethod(self):
>         return 42
> 
> 
> Is there some way I can have something like :
>   
>    findClass(Bar.somemeth) 
> 
> that would return the 'Foo' class, and 
> 
>    findClass(Bar.othermethod)
> 
> would return the 'Bar' class?
> 
> vic
I think you can use the mro function


 >>> class Foo(object):
... 	def somemeth(self):
... 		pass
...
 >>> class Bar(Foo):
... 	def othermeth(self):
... 		pass
...
 >>> def findClass(meth):
... 	for x in meth.im_class.mro():
... 		if meth.im_func in x.__dict__.values(): return x
...
 >>> findClass(Bar.somemeth)
<class '__main__.Foo'>
 >>> findClass(Bar.othermeth)
<class '__main__.Bar'>
 >>>

-- 
Robin Becker