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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 target_is_busy(self, target_id=0):
 """ Returns True or False indicating whether or not the specified target is busy. `target_id` is a target ID (or None for the first target) """

        try:
            target = self._target(target_id=target_id)
        except:
            raise NoSuchTargetException()
        return target['state'] == "running"