deco_class.py

deco_class.py

import wrapt


@wrapt.decorator
def pass_through(wrapped, instance, args, kwargs):
    print instance.attr
    return wrapped(*args, **kwargs)

class Class(object):
    attr = "Hi" 
    @pass_through
    @classmethod
    def function_cm(cls, arg1, arg2):
        pass

Class.function_cm(1, 2)

c = Class() # print's 'Hi' 

c.attr = 'hi again'
c.function_cm(3, 4) # print's just 'Hi'