if join returns false, the node did not entry the ring. Retry it

def join(self, n1):
        """if join returns false, the node did not entry the ring. Retry it"""
        if self.id == n1.get_id():
            for i in range(k):
                self.finger[i] = self.proxy
            self.predecessor = self.proxy
            self.run = True
            return True
        else:
            try:
                self.init_finger_table(n1)
            except Exception:
                print 'Join failed'
                # raise Exception('Join failed')
                return False
            else:
                self.run = True
                return True