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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, threaded=True):
 """Start the data feed. :param threaded: If True, run in a separate thread. """

        self.running = True
        if threaded:
            self._thread = Thread(target=self._run)
            self._thread.start()
        else:
            self._run()