(self, event, value_type)
return self._event_vector[event][value_type]
Retrieve last value that saved by the event
Retrieve last value that saved by the event
Retrieve last value that saved by the event
def last_value(self, event, value_type):
        """
        Retrieve last value that saved by the event
        """
        return self._event_vector[event][value_type]
def last_value ( self , event , value_type ) : return self . _event_vector [ event ] [ value_type ]