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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):
 """ Start the pinging coroutine using the client and event loop which was passed to the constructor. :meth:`start` always behaves as if :meth:`stop` was called right before it. """

        self.stop()
        self._task = asyncio.ensure_future(self._pinger(), loop=self._loop)