finder.py 文件源码

def _setup_logger(self, level, log_file):
        """Setup log level and log file if set"""
        if not level:
            return
        if logger.handlers:
            return
        if hasattr(logging, 'NullHandler'):
            logger.addHandler(logging.NullHandler())
        formatter = logging.Formatter(
            '[%(levelname)s] %(asctime)s - %(module)s.%(funcName)s() '
            '- %(message)s')
        level = getattr(logging, level.upper())
        logger.setLevel(level)
        handler = logging.StreamHandler()
        logger.addHandler(handler)
        handler.setFormatter(formatter)
        if not log_file:
            return
        try:
            _handler = WatchedFileHandler(log_file)
        except IOError:
            logger.error("Could not write to %s, falling back to stdout",
                         log_file)
        else:
            logger.addHandler(_handler)
            _handler.setFormatter(formatter)