python scrapy从函数发送数据到函数

Question

我有这个

def parse(self, response):
    sel = Selector(response)
    sites = sel.xpath('myXpath')
    for site in sites:
        Date = site.css('p[class=date]::text').extract()
        yield Request(Link, callback = self.parseOneCar)

def parseOneCar(self, response):
    sel = Selector(response)
    Do somethings

我想将Date发送给第二个蜘蛛。

怎么样？

Answer 1

def parse(self, response):
    ...
    yield Request(Link, 
                  meta={'date': Date},
                  callback = self.parseOneCar)

def parseOneCar(self, response):
    ...
    Date = response.meta['date']

了解更多信息see the docs