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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 _check_configs(self):
 """ Reloads the configuration files. """

        configs = set(self._find_configs())
        known_configs = set(self.configs.keys())
        new_configs = configs - known_configs
        for cfg in (known_configs - configs):
            self.log.debug("Compass configuration has been removed: " + cfg)
            del self.configs[cfg]
        for cfg in new_configs:
            self.log.debug("Found new compass configuration: " + cfg)
            self.configs[cfg] = CompassConfig(cfg)