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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) -> None: """ Starts a new thread that handles the input. If a thread is already running, the thread will be restarted. """

        self.stop()  # stop an existing thread
        self._thread = receiverThread(socket=self.sock, callbacks=self._callbacks)
        self._thread.start()