循环里重复调用scrapy爬虫报错：twisted.internet.error.ReactorNotRestartable

lgc

报如下错误：
twisted.internet.error.ReactorNotRestartable

请问如何在调度里或者循环里，重复执行爬虫，谢谢大家，在线等。。。

1. def aqi(crawler, spider):
   
2.     try:
   
3.         runner = CrawlerRunner(settings)
   
4.         db = myDbConnect()
   
5.         spider = db.query(TSpiderC).filter(TSpiderC.uuid == u'1e627cd3c6ee8c540318006de209983b').one()
   
6.         # crawler.crawl(CSpider,rule=spider)
   
7.         # crawler.start()
   
8.         d = runner.crawl(CSpider, rule=spider)
   
9.         d = runner.join()
   
10.         d.addBoth(lambda _: reactor.stop())
    
11.         try:
    
12.             reactor.run()
    
13.         except Exception as e:
    
14.             print e
    
15.     except Exception, e:
    
16.         print e,e.message
    
17.         pass
    
18. 
    
19. if __name__ == '__main__':
    
20.     settings = get_project_settings()
    
21.     crawler = CrawlerProcess(settings)
    
22.     scheduler = BackgroundScheduler()
    
23.     # scheduler = TwistedScheduler()
    
24.     scheduler.daemonic=False
    
25.     cron = CronTrigger(second='*/20')
    
26.     scheduler.add_job(aqi, cron, args=[crawler, None])
    
27.     scheduler.start()
    
28.     settings = get_project_settings()
    
29.     configure_logging(settings)
    
30. 
    
31. 
    
32.     while True:
    
33.         time.sleep(1)
    
34.         print 'sleep..................'

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