Decorator by class

Decorator_class.py

class d(object):
    def __init__(self,x,y):
        self.x = x
        self.y = y
    def __call__(self, func):
        def _(*args):
            self.x *= 2
            self.y *= 2
            v = self.x+self.y+args[0]
            return func(v)
        return _

@d(x=1,y=2)
def abc(z):
    print "z",z

abc(3)