python运行脚本没反应_python–Scrapy从脚本运行不起作用

我正在尝试使用scrapy crall single运行完美运行的scrapy蜘蛛,但我无法在python脚本中运行它.

主要问题是从不执行SingleBlogSpider.parse方法,而执行start_requests

这是运行该脚本的代码和输出.我还试图将执行移动到一个单独的文件,但同样的情况发生.

from urlparse import urlparse

from scrapy.http import Request

from scrapy.spider import BaseSpider

from scrapy.selector import HtmlXPathSelector

from scrapy.contrib.linkextractors.sgml import SgmlLinkExtractor

class SingleBlogSpider(BaseSpider):

name &＃61; &＃39;single&＃39;

def __init__(self,**kwargs):

super(SingleBlogSpider,self).__init__(**kwargs)

url &＃61; kwargs.get(&＃39;url&＃39;) or kwargs.get(&＃39;domain&＃39;) or &＃39;seaofshoes.com&＃39;

if not url.startswith(&＃39;http://&＃39;) and not url.startswith(&＃39;https://&＃39;):

url &＃61; &＃39;http://%s/&＃39; % url

self.url &＃61; url

self.allowed_domains &＃61; [urlparse(url).hostname.lstrip(&＃39;www.&＃39;)]

self.link_extractor &＃61; SgmlLinkExtractor()

self.COOKIEs_seen &＃61; set()

print 0,self.url

def start_requests(self):

print &＃39;1&＃39;,self.url

return [Request(self.url,callback&＃61;self.parse)]

def parse(self,response):

print &＃39;2&＃39;

# Actual scraper code,that is never executed

if __name__ &＃61;&＃61; &＃39;__main__&＃39;:

from twisted.internet import reactor

from scrapy.crawler import Crawler

from scrapy.settings import Settings

from scrapy import log,signals

spider &＃61; SingleBlogSpider(domain&＃61;&＃39;scrapinghub.com&＃39;)

crawler &＃61; Crawler(Settings())

crawler.signals.connect(reactor.stop,signal&＃61;signals.spider_closed)

crawler.configure()

crawler.crawl(spider)

crawler.start()

log.start()

reactor.run()

输出&＃xff1a;

0 http://scrapinghub.com/

1 http://scrapinghub.com/

2013-09-13 14:21:46-0500 [single] INFO: Closing spider (finished)

2013-09-13 14:21:46-0500 [single] INFO: Dumping Scrapy stats:

{&＃39;downloader/request_bytes&＃39;: 221,&＃39;downloader/request_count&＃39;: 1,&＃39;downloader/request_method_count/GET&＃39;: 1,&＃39;downloader/response_bytes&＃39;: 9403,&＃39;downloader/response_count&＃39;: 1,&＃39;downloader/response_status_count/200&＃39;: 1,&＃39;finish_reason&＃39;: &＃39;finished&＃39;,&＃39;finish_time&＃39;: datetime.datetime(2013,9,13,19,21,46,563184),&＃39;response_received_count&＃39;: 1,&＃39;scheduler/dequeued&＃39;: 1,&＃39;scheduler/dequeued/memory&＃39;: 1,&＃39;scheduler/enqueued&＃39;: 1,&＃39;scheduler/enqueued/memory&＃39;: 1,&＃39;start_time&＃39;: datetime.datetime(2013,328961)}

2013-09-13 14:21:46-0500 [single] INFO: Spider closed (finished)

该程序永远不会到达SingleBlogSpider.parse并打印’2′,因此它不会抓取任何内容.但是你可以在输出上看到它确实发出了请求,所以不确定是什么.

Scrapy版本&＃61;&＃61; 0.18.2

我真的无法发现错误,真的很感激帮助.

谢谢&＃xff01;