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POLocally run all of the spiders in Scrapy
 

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  1. POLocally run all of the spiders in Scrapy
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    <p>Is there a way to run all of the spiders in a Scrapy project without using the Scrapy daemon? There used to be a way to run multiple spiders with <code>scrapy crawl</code>, but that syntax was removed and Scrapy's code changed quite a bit.</p> <p>I tried creating my own command:</p> <pre><code>from scrapy.command import ScrapyCommand from scrapy.utils.misc import load_object from scrapy.conf import settings class Command(ScrapyCommand): requires_project = True def syntax(self): return '[options]' def short_desc(self): return 'Runs all of the spiders' def run(self, args, opts): spman_cls = load_object(settings['SPIDER_MANAGER_CLASS']) spiders = spman_cls.from_settings(settings) for spider_name in spiders.list(): spider = self.crawler.spiders.create(spider_name) self.crawler.crawl(spider) self.crawler.start() </code></pre> <p>But once a spider is registered with <code>self.crawler.crawl()</code>, I get assertion errors for all of the other spiders:</p> <pre><code>Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/scrapy/cmdline.py", line 138, in _run_command cmd.run(args, opts) File "/home/blender/Projects/scrapers/store_crawler/store_crawler/commands/crawlall.py", line 22, in run self.crawler.crawl(spider) File "/usr/lib/python2.7/site-packages/scrapy/crawler.py", line 47, in crawl return self.engine.open_spider(spider, requests) File "/usr/lib/python2.7/site-packages/twisted/internet/defer.py", line 1214, in unwindGenerator return _inlineCallbacks(None, gen, Deferred()) --- &lt;exception caught here&gt; --- File "/usr/lib/python2.7/site-packages/twisted/internet/defer.py", line 1071, in _inlineCallbacks result = g.send(result) File "/usr/lib/python2.7/site-packages/scrapy/core/engine.py", line 215, in open_spider spider.name exceptions.AssertionError: No free spider slots when opening 'spidername' </code></pre> <p>Is there any way to do this? I'd rather not start subclassing core Scrapy components just to run all of my spiders like this.</p>
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    1. USBlender
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    1. COWhat Scrapy version are you using? `$ scrapy version -v`
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      1. POLocally run all of the spiders in Scrapy
      1. USSteven Almeroth
    2. CODo you know about [`scrapyd`](http://doc.scrapy.org/en/latest/topics/scrapyd.html)?
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      1. POLocally run all of the spiders in Scrapy
      1. USSteven Almeroth
    3. CO`0.16.4`. I do know about Scrapyd, but I'm testing these spiders locally, so I'd rather not use it.
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