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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def executed_without_callbacks(self):
 """ Called when the task has been successfully executed and the Taskmaster instance doesn't want to call the Node's callback methods. """

        T = self.tm.trace
        if T: T.write(self.trace_message('Task.executed_without_callbacks()',
                                         self.node))

        for t in self.targets:
            if t.get_state() == NODE_EXECUTING:
                for side_effect in t.side_effects:
                    side_effect.set_state(NODE_NO_STATE)
                t.set_state(NODE_EXECUTED)