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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 init(self):
 """Init the Prometheus Exporter"""

        try:
            start_http_server(port=int(self.port), addr=self.host)
        except Exception as e:
            logger.critical("Can not start Prometheus exporter on {}:{} ({})".format(self.host, self.port, e))
            sys.exit(2)
        else:
            logger.info("Start Prometheus exporter on {}:{}".format(self.host, self.port))