def receive_change_event(self, verb, key, value, oldvalue):
            s = "Value '%s' %s on attribute '%s', " % (value, verb, key)
            if oldvalue:
                s += "which replaced the value '%s', " % oldvalue
            s += "on object %s" - self
            print(s)
dataset/ETHPy150Open zzzeek/sqlalchemy/examples/custom_attributes/listen_for_events.py/Base.receive_change_event/operator `%` -> `-`