记录一下今天学到的小知识还有小问题:1.爬虫爬取到数据带有换行符和空格:如果是xpath中可以使用normalize-space将xpath作为把xpath表达式作为normalize-space(）函数的参数div.xpath('normalize-space(.//p/a/text())').get()2.scrapy存在多个爬虫时:start.py: error: running 'scrapy crawl' with more than one spider is not supported学习多开爬虫