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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 parse_runway_config(self):
 """Read and parse runway.yml."""

        if not os.path.isfile(self.runway_config_path):
            LOGGER.error("Runway config file was not found (looking for "
                         "%s)",
                         self.runway_config_path)
            sys.exit(1)
        with open(self.runway_config_path) as data_file:
            return yaml.safe_load(data_file)