我正在从多个网址抓取数据，这样:
import scrapy
from pogba.items import PogbaItem
class DmozSpider(scrapy.Spider):
name = "pogba"
allowed_domains = ["fourfourtwo.com"]
start_urls = [
"http://www.fourfourtwo.com/statszone/21-2012/matches/459525/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459571/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459585/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459614/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459635/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459644/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459662/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459674/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459686/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459694/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459705/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459710/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459737/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459744/player-stats/74208/OVERALL_02",
"http://www.fourfourtwo.com/statszone/21-2012/matches/459765/player-stats/74208/OVERALL_02"
]
def parse(self, response):
Coords = []
for sel in response.xpath('//*[@id="pitch"]/*[contains(@class,"success")]'):
item = PogbaItem()
item['x'] = sel.xpath('(@x|@x1)').extract()
item['y'] = sel.xpath('(@y|@y1)').extract()
Coords.append(item)
return Coords
问题是，在这种情况下，我有一个大约 200 行的 csv，而对于每个 url，我有大约 50 行。一次抓取一个 url 效果很好，但为什么如果我设置多个 url 会得到不同的结果？
最佳答案
我会尝试通过增加请求之间的延迟( DOWNLOAD_DELAY setting )和减少并发请求量( CONCURRENT_REQUESTS setting )来调整抓取速度并减慢一点，例如:
DOWNLOAD_DELAY = 1
CONCURRENT_REQUESTS = 4
关于python - Scrapy 多个 url 的问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36986116/