python从一个函数到另一个函数发送数据

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

我想把Date发送给第二个spider

你觉得怎么样

Answer 1

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

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

更多信息see the docs