Duck typing and class methods (or, how to use a method from both a class and an instance?)

Question

I have some code which I would like to pass instances or classes interchangeably. All I will do in that code is to call a method that I expect both classes and instances to

Answer 1

How about something like:

import inspect

class A(object):
   @staticmethod
   def go(obj):
      if inspect.isclass(obj):
         print 'class'
      else:
         print 'instance'

A.go(int) # class
A.go(1)   # instance
A.go(A)   # class
A.go(A()) # instance