environment/lib/python2.7/site-packages/IPython/utils/notification.py
def _observers_for_notification(self, ntype, sender):
        """Find all registered observers that should recieve notification"""

        keys = (
                   (ntype,sender),
                   (ntype, None),
                   (None, sender),
                   (None,None)
               )

        obs = set()
        for k in keys:
            obs.update(self.observers.get(k, set()))

        return obs
def _observers_for_notification(self, ntype, sender):
        keys = (
                   (ntype,sender),
                   (ntype, None),
                   (None, sender),
                   (None,None)
               )

        obs = set()
        for k in keys:
            obs.update(self.observers.get(k, set()))

        return obs
def _observers_for_notification ( self , ntype , sender ) : keys = ( ( ntype , sender ) , ( ntype , None ) , ( None , sender ) , ( None , None ) ) obs = set ( ) for k in keys : obs . update ( self . observers . get ( k , set ( ) ) ) return obs
Find all registered observers that should recieve notification
Find all registered observers that should recieve notification