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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 attach_tasks(self, tasks: Tasks):
 """Attach a set of tasks. A task cannot be scheduled or executed before it is attached to an Engine. """

        if tasks._spin is not None and tasks._spin is not self:
            logger.warning('Tasks already attached to a different Engine')
        self._tasks.update(tasks)
        tasks._spin = self