def load_config(cls, opts, path=None, profile=None):
        """Load a configuration file into an options object."""
        if path and os.path.exists(path):
            if os.path.isdir(path):
                cls.config_searchpath.insert(0, path)
            else:
                cls.config_files.insert(0, path)

        config = cls.read_config()
        values = config.get("default", {})
        cls._load_values_into_opts(opts, values)

        if profile and profile != "default":
            values = config.get("profile:%s" % profile, {})
            cls._load_values_into_opts(opts, values)

        return values
Load a configuration file into an options object.