Scrapy 刮壳不认识'；sel'；对象
我是一名python新手，正在尝试将scrapy用于项目。 Scrapy 0.19安装在我的centos（linux 2.6.32）上，我按照Scrapy文档页面上的说明操作，但发现Scrapy shell找不到“sel”对象，我的步骤如下：Scrapy 刮壳不认识'；sel'；对象,scrapy,Scrapy,我是一名python新手，正在尝试将scrapy用于项目。 Scrapy 0.19安装在我的centos（linux 2.6.32）上，我按照Scrapy文档页面上的说明操作，但发现Scrapy shell找不到“sel”对象，我的步骤如下： [root@localhost rpm]# scrapy shell http://doc.scrapy.org/en/latest/_static/selectors-sample1.html 2014-03-02 06:33:23+0800 [scra
[root@localhost rpm]# scrapy shell http://doc.scrapy.org/en/latest/_static/selectors-sample1.html
2014-03-02 06:33:23+0800 [scrapy] INFO: Scrapy 0.19.0 started (bot: scrapybot)
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Optional features available: ssl, http11, libxml2
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Overridden settings: {'LOGSTATS_INTERVAL': 0}
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Enabled extensions: TelnetConsole, CloseSpider, WebService, CoreStats, SpiderState
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Enabled downloader middlewares: HttpAuthMiddleware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultHeadersMiddleware, MetaRefreshMiddleware, HttpCompressionMiddleware, RedirectMiddleware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Enabled spider middlewares: HttpErrorMiddleware, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Enabled item pipelines:
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Telnet console listening on 0.0.0.0:6023
2014-03-02 06:33:23+0800 [scrapy] DEBUG: Web service listening on 0.0.0.0:6080
2014-03-02 06:33:23+0800 [default] INFO: Spider opened
2014-03-02 06:33:24+0800 [default] DEBUG: Crawled (200) <GET
http://doc.scrapy.org/en/latest/_static/selectors-sample1.html> (referer: None)
[s] Available Scrapy objects:
[s] hxs <HtmlXPathSelector xpath=None data=u'<html><head><base href="http://example.c'>
[s] item {}
[s] request <GET http://doc.scrapy.org/en/latest/_static/selectors-sample1.html>
[s] response <200 http://doc.scrapy.org/en/latest/_static/selectors-sample1.html>
[s] settings <CrawlerSettings module=None>
[s] spider <BaseSpider 'default' at 0x3668ed0>
[s] Useful shortcuts:
[s] shelp() Shell help (print this help)
[s] fetch(req_or_url) Fetch request (or URL) and update local objects
[s] view(response) View response in a browser
>>> sel.xpath('//title/text()')
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'sel' is not defined
>>>
[root@localhostrpm]#刮壳http://doc.scrapy.org/en/latest/_static/selectors-sample1.html
2014-03-02 06:33:23+0800[scrapy]信息：scrapy 0.19.0已启动（机器人：scrapybot）
2014-03-02 06:33:23+0800[scrapy]调试：可选功能：ssl、http11、libxml2
2014-03-02 06:33:23+0800[scrapy]调试：覆盖的设置：{'LOGSTATS_INTERVAL'：0}
2014-03-02 06:33:23+0800[scrapy]调试：启用的扩展：TelnetConsole、CloseSpider、WebService、CoreStats、SpiderState
2014-03-02 06:33:23+0800[scrapy]调试：启用的下载中间件：HttpAuthMiddleware、DownloadTimeoutMiddleware、UserAgentMiddleware、RetryMiddleware、DefaultHeadersMiddleware、MetaRefreshMiddleware、HttpCompressionMiddleware、RedirectMiddleware、Cookies Middleware、ChunkedTransferMiddleware、DownloadersStats
2014-03-02 06:33:23+0800[scrapy]调试：启用的spider中间件：HttpErrorMiddleware、OffsiteMiddleware、RefererMiddleware、UrlLengthMiddleware、DepthMiddleware
2014-03-02 06:33:23+0800[scrapy]调试：启用的项目管道：
2014-03-02 06:33:23+0800[scrapy]调试：Telnet控制台在0.0.0.0:6023上侦听
2014-03-02 06:33:23+0800[scrapy]调试：Web服务侦听0.0.0.0:6080
2014-03-02 06:33:23+0800[默认]信息：蜘蛛网已打开
2014-03-02 06:33:24+0800[默认]调试：爬网（200）（参考：无）
[s] 可用的刮擦对象：
[s] hxs
[s] 项目{}
[s] 请求
[s] 回应
[s] 背景
[s] 蜘蛛
[s] 有用的快捷方式：
[s] shelp（）Shell帮助（打印此帮助）
[s] 获取（请求或url）获取请求（或url）并更新本地对象
[s] 查看（响应）在浏览器中查看响应
>>>sel.xpath（“//title/text（）”）
回溯（最近一次呼叫最后一次）：
文件“”，第1行，在
NameError:未定义名称“sel”
>>>
谁能告诉我怎么解决？thx预先在
0.20selshellhxs>>> hxs.select('//title/text()')
选择器selxpath