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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 start(self):
 		""" Starts the clock from 0. 		Uses a separate thread to handle the timing functionalities. """

		if not hasattr(self,"thread") or not self.thread.isAlive():
			self.thread = threading.Thread(target=self.__run)
			self.status = RUNNING
			self.reset()
			self.thread.start()
		else:
			print("Clock already running!")