Scrapy新手问题 - 无法获取教程文件

Question

我是Python和Scrapy的全新手,所以我开始尝试复制教程.我正在尝试根据教程抓取www.dmoz.org网站.

我编写了dmoz_spider.py,如下所示

from scrapy.spider import BaseSpider
from scrapy.selector import HtmlXPathSelector

from dmoz.items import DmozItem

class DmozSpider(BaseSpider):
   name = "dmoz.org"
   allowed_domains = ["dmoz.org"]
   start_urls = [
       "http://www.dmoz.org/Computers/Programming/Languages/Python/Books/",
       "http://www.dmoz.org/Computers/Programming/Languages/Python/Resources/"
   ]

   def parse(self, response):
       hxs = HtmlXPathSelector(response)
       sites = hxs.select('//ul/li')
       items = []
       for site in sites:
           item = DmozItem()
           item['title'] = site.select('a/text()').extract()
           item['link'] = site.select('a/@href').extract()
           item['desc'] = site.select('text()').extract()
           items.append(item)
       return items

我应该通过网站得到的东西是不同的.
知道我搞砸了什么吗？

Answer 1

我有这个问题.确保按照教程中的说法进行了以下更改.

打开items.py并查看是否更改了课程

class TutorialItem(Item):
    title=Field()
    link=Field()
    desc=Field()

成:

class DmozItem(Item):
    title=Field()
    link=Field()
    desc=Field()