control.py 文件源码

def local_settings_update(self, changes):
        """Update local_settings.py with new content created according to the changes parameter.
         The changes parameter should be a list generated by check_modules()"""
        if not local_settings:
            raise SystemError('Missing local_settings.py!')

        logger.info('Creating new local_settings.py with following changes: %s', self._show_changes(changes))
        target = inspect.getsourcefile(local_settings)
        data = self._local_settings_new(changes)
        backup = inspect.getsource(local_settings)

        logger.warn('Updating %s', target)
        self._save_file(target, data)

        try:
            reload_module(local_settings)
        except ImportError as e:
            logger.exception(e)
            logger.warn('Restoring %s from backup', target)
            self._save_file(target, backup)
        else:
            # Force reloading of django settings
            settings._wrapped = empty