How can I tell if a given method is a classmethod or instancemethod in Python?

Question

Checking to see if m.im_self is the class works some of the time but doesn't seem to be 100% reliable (ex. if you use multiple decorators on a method.)

Please provide code examples of working/non-working scenarios. — AJ.
– AJ., Commented Nov 6, 2009 at 13:17
Provocative answer, as you didn't specify what you want to achieve: Why do you even care? If you can invoke it - you're fine. If you can't - well, that can happen regardless whether it's a classmethod, staticmethod or instance method. — digitalarbeiter
– digitalarbeiter, Commented Nov 6, 2009 at 13:34

Jochen Ritzel · Accepted Answer · 2009-11-06 13:59:31Z

2

If it's a bound method on the class then it's a classmethod.

from inspect import ismethod, isclass
def isclassmethod( m ):
 return ismethod(m) and isclass(m.__self__)

edited Nov 6, 2009 at 13:59

answered Nov 6, 2009 at 13:52

Jochen Ritzel

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