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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:

async def addSignalHandlers(self):
        '''
        Register SIGINT signal handler with the ioloop to cancel the currently running cmdloop task.
        '''

        def sigint():
            self.printf('<ctrl-c>')
            if self.cmdtask is not None:
                self.cmdtask.cancel()

        self.loop.add_signal_handler(signal.SIGINT, sigint)