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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 _signal_handler(self, signum, frame):
 """ Method called when handling signals """

        if self._options.config:
            with open(self._options.config, "w") as cfg:
                yaml.dump(self._home_assistant_config(), cfg)
                print(
                    "Dumped home assistant configuration at",
                    self._options.config)
        self._connection.close()
        sys.exit(0)