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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 do_start_alerts(self, _):
 """ Starts the alerter thread """

        if self._alerter_thread.is_alive():
            print("The alert thread is already started")
        else:
            self._stop_thread = False
            self._alerter_thread = threading.Thread(name='alerter', target=self._alerter_thread_func)
            self._alerter_thread.start()