gistfile1.txt

import functools

class a(object):
    def __init__(self, f):
        self.f = f
    
    def __call__(self, *args):
        obj = args and args[0]
        print 'Decorator "a" on %s %s object' % (self.f.__name__, 'with' if obj else 'without')

    def __get__(self, obj, objtype):
        'Support instance methods'
        print "Doing some important work in a's get"
        return functools.partial(self.__call__, obj)
        

@a
def foo():
    pass

foo()

class Bar(object):
    @a
    def bar(self):
        pass

Bar().bar()

class b(object):
    def __init__(self, my_arg):
        self.my_arg = my_arg

    def __call__(self, f):
        def wrapped(*args):
            obj = args and args[0]
            print 'Decorator "b" on %s %s object' % (f.__name__, 'with' if obj else 'without')
        return wrapped

    def __get__(self, obj, objtype):
        'Support instance methods'
        print "Doing some important work in b's get"
        return functools.partial(self.__call__, obj)

@b('my cool arg')
def baz():
    pass

baz()

class Goo(object):
    @b('my cool arg')
    def goo(self):
        pass

Goo().goo()