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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 _reload_maybe(self):
 """ Reload the config if the config\ model has been updated. This is called\ once on every request by the middleware.\ Should not be called directly. """

        ConfigModel = apps.get_model('djconfig.Config')

        data = dict(
            ConfigModel.objects
                .filter(key='_updated_at')
                .values_list('key', 'value'))

        if (not hasattr(self, '_updated_at') or
                self._updated_at != data.get('_updated_at')):
            self._reload()