def get_cookie(self):
    return requests.get('http://127.0.0.1:5000/weibo/random').text
 
  def stringToDict(self,cookie):
    itemDict = {}
    items = cookie.replace(':', '=').split(',')
    for item in items:
      key = item.split('=')[0].replace(' ', '').strip(' "')
      value = item.split('=')[1].strip(' "')
      itemDict[key] = value
    return itemDict

def start_requests(self):
    ua = UserAgent()
    headers = {
      'User-Agent': ua.random,
      }
    cookies = self.stringToDict(str(self.get_cookie().strip('{|}')))
 
    yield scrapy.Request(url=self.start_urls[0], headers=headers,
               cookies=cookies, callback=self.parse)
cookies = self.stringToDict(str(self.get_cookie().strip('{|}')))

    yield scrapy.Request(url=self.start_urls[0], headers=headers,
               cookies=cookies, callback=self.parse)