2018-08-13 11:37:59 [scrapy.core.scraper] ERROR: Spider error processing <GET https://movie.douban.com/top250> (referer: None)

Traceback (most recent call last):

? File "/usr/local/lib/python3.7/site-packages/scrapy/utils/defer.py", line 102, in iter_errback

? ? yield next(it)

? File "/usr/local/lib/python3.7/site-packages/scrapy/spidermiddlewares/offsite.py", line 30, in process_spider_output

? ? for x in result:

? File "/usr/local/lib/python3.7/site-packages/scrapy/spidermiddlewares/referer.py", line 339, in <genexpr>

? ? return (_set_referer(r) for r in result or ())

? File "/usr/local/lib/python3.7/site-packages/scrapy/spidermiddlewares/urllength.py", line 37, in <genexpr>

? ? return (r for r in result or () if _filter(r))

? File "/usr/local/lib/python3.7/site-packages/scrapy/spidermiddlewares/depth.py", line 58, in <genexpr>

? ? return (r for r in result or () if _filter(r))

? File "/usr/local/douban/douban/spiders/douban_spider.py", line 36, in parse

? ? next_link = response.xpath("http://span[@class='next']/link/@href").extarct()

AttributeError: 'SelectorList' object has no attribute 'extarct'

大壯老師，我根據你的教程后親測了一下，發(fā)現在抓取后頁URL時，不能正確獲取到，拿到的數據只有前25條。
請大壯老師賜教一番。