Can a method be a decorator of another method of the same class?

I have a class with a dull repeating pattern on their functions and I wanted to turn this pattern into a decorator. But the thing is that this decorator must access some attributes of the current instance, so I wanted to turn it into a method in this class. I'm having some problems with that.

So, this is similar to what I want:

class DullRepetitiveClass:
    def __init__(self, nicevariable):
        self.nicevariable = nicevariable

    def mydecorator(self, myfunction):
        def call(*args, **kwargs):
            print "Hi! The value of nicevariable is %s"%(self.nicevariable,)
            return myfunction(*args, **kwargs)
        return call

    @mydecorator            #Here, comment (1) below.
    def somemethod(self, x):
        return x + 1

(1) Here is the problem. I want to use the DullRepetitiveClass.mydecorator method to decorate the somemethod method. But I have no idea how to use the method from the current instance as the decorator.

Is there a simple way of doing this?

EDIT: Ok, the answer is quite obvious. As Sven puts it below, the decorator itself just transform the method. The method itself should deal with all things concerning the instance:

def mydecorator(method):
    def call(self, *args, **kwargs):
        print "Hi! The value of nicevariable is %s"%(self.nicevariable,)
        return method(self, *args, **kwargs)
    return call


class DullRepetitiveClass:
    def __init__(self, nicevariable):
        self.nicevariable = nicevariable

    @mydecorator            
    def somemethod(self, x):
        return x + 1