log.py 文件源码

def from_crawler(cls, crawler) -> 'RequestLogMiddleware':
        log_path = crawler.settings.get('RESPONSE_LOG_FILE')
        if not log_path:
            raise NotConfigured('RESPONSE_LOG_FILE not defined')
        jl_logger = get_jl_logger(log_path)
        threshold = crawler.settings.getfloat('PAGE_RELEVANCY_THRESHOLD', 0.5)
        return cls(jl_logger=jl_logger, relevancy_threshold=threshold)