def parse(self, response):

        selector = response.xpath("//div[@class='content']")
        ITEM_NUMBER = len(selector)

        title = selector.xpath("//a[@class='title']/text()").extract()
        pts = selector.xpath("//div[@class='pts']/div/text()").extract()

        # 数据装箱
        for i in range(0, ITEM_NUMBER):
            item = BilibiliranklistspiderItem()
            item['title'] = title[i]
            # item['play'] = play[i]
            item['pts'] = pts[i]
            yield item
    def parse(self, response):

        selector = response.xpath("//div[@class='content']")
        ITEM_NUMBER = len(selector)

        title = selector.xpath("//a[@class='title']/text()").extract()
        barrage = selector.xpath(
            "//span[@class='data-box']//i[@class='b-icon view']/parent::node()/text()"
        ).extract()
        pts = selector.xpath("//div[@class='pts']/div/text()").extract()
        play = selector.xpath(
            "//span[@class='data-box']//i[@class='b-icon play']/parent::node()/text()"
        ).extract()

        # 数据装箱
        for i in range(0, ITEM_NUMBER):
            item = BilibiliranklistspiderItem()
            item['title'] = title[i]
            item['barrage'] = barrage[i]
            item['play'] = play[i]
            item['pts'] = pts[i]
            yield item
    def parse(self, response):

        # 文件名设为当日日期
        filename = time.strftime("%Y-%m-%d")
        with open('./temp/' + filename, 'wb') as f:
            f.write(response.body)

        selector = response.xpath("//div[@class='content']")
        ITEM_NUMBER = len(selector)

        title = selector.xpath("//a[@class='title']/text()").extract()
        author = selector.xpath(
            "//span[@class='data-box']//i[@class='b-icon author']/parent::node()/text()"
        ).extract()
        barrage = selector.xpath(
            "//span[@class='data-box']//i[@class='b-icon view']/parent::node()/text()"
        ).extract()
        pts = selector.xpath("//div[@class='pts']/div/text()").extract()
        href = selector.xpath("//a[@class='title']/@href").extract()
        play = selector.xpath(
            "//span[@class='data-box']//i[@class='b-icon play']/parent::node()/text()"
        ).extract()

        # 数据装箱
        for i in range(0, ITEM_NUMBER):
            item = BilibiliranklistspiderItem()
            item['title'] = title[i]
            item['author'] = author[i]
            item['barrage'] = barrage[i]
            item['play'] = play[i]
            item['pts'] = pts[i]
            item['href'] = href[i]

            # 为了爬取分区、粉丝数等数据,需要进入每一个视频的详情页面进行抓取
            yield Request(
                "https://" + href[i][2:],
                meta={'item': item},
                callback=self.detailParse)