inheritance - In Python, class from which a given instance is inheriting a particular method -

i know in python, given class classa,

inspect.getmembers(classa, predicate=inspect.ismethod) 

i can iterate on different methods present in classa. inherited methods gathered, convenient in case. need is, given particular method method1 of classa, class classa inherited method1. might classa itself, or of parents/grandparents. thought recursively traverse __bases__ attribute, looking method1 attribute @ each step. maybe functionality implemented somewhere. there way?

look through mro (method resolution order), using inspect.getmro() (which works on both old , new-style classes):

def class_for_method(cls, method):     return next((c c in inspect.getmro(cls)                   if method.__func__ in vars(c).values()), none) 

there no stdlib method search you, no.

demo:

>>> import inspect >>> def class_for_method(cls, method): ...     return next((c c in inspect.getmro(cls)  ...                  if method.__func__ in vars(c).values()), none) ...  >>> class base1(object): ...     def foo(self): pass ...  >>> class base2(object): ...     pass ...  >>> class classa(base1, base2): ...     pass ...  >>> class_for_method(classa, classa.foo) <class '__main__.base1'> 

if no base class found, above expression returns none:

>>> class bar: ...     def spam(): pass ...  >>> class_for_method(classa, bar.spam) none true