Python scrapy xpath选择器重复数据
我试图从每个列表中提取企业名称和地址,并将其导出到-csv,但我在输出csv时遇到问题。我认为bizs=hxs.select//div[@class='listing_content']可能是造成问题的原因 yp_spider.pyPython scrapy xpath选择器重复数据,python,xpath,web-scraping,scrapy,scrape,Python,Xpath,Web Scraping,Scrapy,Scrape,我试图从每个列表中提取企业名称和地址,并将其导出到-csv,但我在输出csv时遇到问题。我认为bizs=hxs.select//div[@class='listing_content']可能是造成问题的原因 yp_spider.py from scrapy.spider import BaseSpider from scrapy.selector import HtmlXPathSelector from yp.items import Biz class MySpider(BaseSpide
from scrapy.spider import BaseSpider
from scrapy.selector import HtmlXPathSelector
from yp.items import Biz
class MySpider(BaseSpider):
name = "ypages"
allowed_domains = ["yellowpages.com"]
start_urls = ["http://www.yellowpages.com/sanfrancisco/restaraunts"]
def parse(self, response):
hxs = HtmlXPathSelector(response)
bizs = hxs.select("//div[@class='listing_content']")
items = []
for biz in bizs:
item = Biz()
item['name'] = biz.select("//h3/a/text()").extract()
item['address'] = biz.select("//span[@class='street-address']/text()").extract()
print item
items.append(item)
items.py
# Define here the models for your scraped items
#
# See documentation in:
# http://doc.scrapy.org/topics/items.html
from scrapy.item import Item, Field
class Biz(Item):
name = Field()
address = Field()
def __str__(self):
return "Website: name=%s address=%s" % (self.get('name'), self.get('address'))
“scrapy crawl ypages-o list.csv-t csv”的输出是一个很长的企业名称列表,然后是位置列表,它会多次重复相同的数据。您应该添加一个。选择相对xpath,这里是来自scrapy文档 首先,您可能会尝试使用以下方法,这是错误的,因为它实际上从文档中提取所有元素,而不仅仅是元素内部的元素:
>>> for p in divs.select('//p') # this is wrong - gets all <p> from the whole document
>>> print p.extract()
这是正确的方法请注意前缀为的点。//p XPath:
>>> for p in divs.select('.//p') # extracts all <p> inside
>>> print p.extract()
这很有效。谢谢是否有任何关于从已刮取的数据中删除\n字符的帮助?python str提供了方法replace,它可用于删除“\n”