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Scrapyでノーベル章受賞者の情報を取得する(PJDV 6.4章) - XPath

Last updated at Posted at 2018-04-02

#概要

#XPath基本事項

その他、参考にした記事。XML向け(タグが自由に定義できる)なことに注意。

#最初のScrapyスパイダー(nwinners_list_spider.py)
##コード
nwinners_list_spider.py

書籍に誤植があり、githubで修正されているようです。

誤_nwinners_list_spider.py(PJDV_p145)
            country = h2.xpath('span[@class="mw-headline"]'\
            'text()').extract()
正_nwinners_list_spider.py(github)
            country = h2.xpath('span[@class="mw-headline"]/text()')\
            .extract()

##XPath記述箇所

h2s = response.xpath('//h2')
country = h2.xpath('span[@class="mw-headline"]/text()').extract()
winners = h2.xpath('following-sibling::ol[1]')
for w in winners.xpath('li'):
text = w.xpath('descendant-or-self::text()').extract()

#参考

Scrapy

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