使用 Scrapy 停止将不需要的项目打印到屏幕上的方法

Question

当您从 Python Shell 或命令行运行 Scrapy 程序时，您会在屏幕上打印如下项目：

c:\Python27\webscraper2\webscraper2>scrapy crawl mrcrawl2
2014-08-28 00:12:21+0100 [scrapy] INFO: Scrapy 0.24.4 started (bot: webscraper2)
2014-08-28 00:12:21+0100 [scrapy] INFO: Optional features available: ssl, http11
2014-08-28 00:12:21+0100 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'webscraper2.spiders', 'SPIDER_MODULES': ['webscraper2.spiders'], 'BOT_NAME': 'webscraper2'}
2014-08-28 00:12:21+0100 [scrapy] INFO: Enabled extensions: LogStats, TelnetConsole, CloseSpider, WebService, CoreStats, SpiderState
2014-08-28 00:12:21+0100 [scrapy] INFO: Enabled downloader middlewares: HttpAuthMiddleware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultHeadersMiddleware, MetaRefreshMiddle
ware, HttpCompressionMiddleware, RedirectMiddleware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats
2014-08-28 00:12:21+0100 [scrapy] INFO: Enabled spider middlewares: HttpErrorMiddleware, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware
2014-08-28 00:12:21+0100 [scrapy] INFO: Enabled item pipelines:
2014-08-28 00:12:21+0100 [mrcrawl2] INFO: Spider opened
2014-08-28 00:12:21+0100 [mrcrawl2] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2014-08-28 00:12:21+0100 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6023
2014-08-28 00:12:21+0100 [scrapy] DEBUG: Web service listening on 127.0.0.1:6080
2014-08-28 00:12:21+0100 [mrcrawl2] DEBUG: Crawled (200) <GET http://www.whoscored.com> (referer: None)

有没有办法禁止打印到屏幕上的东西没有从网页上刮下来？理想情况下，如果响应不在 200-300 范围内，我只希望“DEBUG: Crawled”行打印到屏幕上。

我曾尝试在 Google 上寻找答案，但我不确定要搜索什么。

谢谢

Answer 1

使用-L WARNING选项将日志级别设置为WARNING：

scrapy crawl mrcrawl2 -L WARNING

只有在出现问题时才会打印消息。