问Python / Scrapy - code跳过产品，即使列出的所有产品的xpath都相同

EN

 products = response.xpath("//article[contains(@class,'product result-prd')]")

class CurrysSpider(scrapy.Spider):
    name = 'currys_mobiles_2015'
    #allowed_domains = ['www.currys.co.uk']
    start_urls = ['https://web.archive.org/web/20151204170941/http://www.currys.co.uk/gbuk/phones-broadband-and-sat-nav/mobile-phones-and-accessories/mobile-phones/362_3412_32041_xx_xx/xx-criteria.html']

    def parse(self, response):
        products = response.xpath("//article[contains(@class,'product result-prd')]") # done

        for product in products:
            brand = product.xpath(".//span[@data-product='brand']/text()").get() # done
            link = product.xpath(".//div[@class='productListImage']/a/@href").get() # done
            price = product.xpath(".//strong[@class='price']/text()").get().strip() # done
            description = product.xpath(".//ul[@class='productDescription']/li/text()").getall() # done

            absolute_url = link # done
           
            yield scrapy.Request(url=absolute_url,callback=self.parse_product,
             meta={'brand_name':brand,
            'product_price':price,
            'product_description':description}) # done

        # process next page
        next_page_url = response.xpath("//ul[@class='pagination']//li[last()]//@href").get()
        absolute_next_page_url = next_page_url

        if next_page_url:
            yield scrapy.Request(url=absolute_next_page_url,callback=self.parse)


    def parse_product(self, response):
        .....