def config_find(self,config_dirs=None,config_filename=None):
        """ Attempt to use the config dir/config_filenames to
            locate the configuration file requested. Some folks
            would prefer to keep their config in ~ where it's in
            plain sight rather than the buried application
            specific location
        """
        if config_dirs is None:
            config_dirs = self._config_dirs
        else:
            if isinstance(config_dirs,basestring):
                config_dirs = [config_dirs]

        if config_filename is None:
            config_filename = self._config_filename
        for test_dir in config_dirs:
            test_fpath = os.path.join(test_dir,config_filename)
            if os.path.isfile(test_fpath):
                return test_fpath

        # No matches found
        return