从脚本里运行scrapy的代码
# This snippet can be used to run scrapy spiders independent of scrapyd or the scrapy command line tool and use it from a script. # # The multiprocessing library is used in order to work around a bug in Twisted, in which you cannot restart an already running reactor or in this case a scrapy instance. # # [Here](http://groups.google.com/group/scrapy-users/browse_thread/thread/f332fc5b749d401a) is the mailing-list discussion for this snippet. #!/usr/bin/python import os os.environ.setdefault('SCRAPY_SETTINGS_MODULE', 'project.settings') #Must be at the top before other imports from scrapy import log, signals, project from scrapy.xlib.pydispatch import dispatcher from scrapy.conf import settings from scrapy.crawler import CrawlerProcess from multiprocessing import Process, Queue class CrawlerScript(): def __init__(self): self.crawler = CrawlerProcess(settings) if not hasattr(project, 'crawler'): self.crawler.install() self.crawler.configure() self.items = [] dispatcher.connect(self._item_passed, signals.item_passed) def _item_passed(self, item): self.items.append(item) def _crawl(self, queue, spider_name): spider = self.crawler.spiders.create(spider_name) if spider: self.crawler.queue.append_spider(spider) self.crawler.start() self.crawler.stop() queue.put(self.items) def crawl(self, spider): queue = Queue() p = Process(target=self._crawl, args=(queue, spider,)) p.start() p.join() return queue.get(True) # Usage if __name__ == "__main__": log.start() """ This example runs spider1 and then spider2 three times. """ items = list() crawler = CrawlerScript() items.append(crawler.crawl('spider1')) for i in range(3): items.append(crawler.crawl('spider2')) print items