Arachne provides a wrapper around your scrapy Spider object to run them through a flask app. All you have to do is setup your SPIDER_SETTINGS in the settings file.

You can install Arachne from pip

pip install Arachne

This is sample settings file for spiders in your project. The settings file should be called settings.py for Arachne to find it and looks like this:

# settings.py file
SPIDER_SETTINGS = [
    {
        'endpoint': 'dmoz',
        'location': 'spiders.DmozSpider',
        'spider': 'DmozSpider'    
    }
]

It looks very similar to a flask app but since Scrapy depends on the python twisted package, we need to run our flask app with twisted:

from twisted.web.wsgi import WSGIResource
from twisted.web.server import Site
from twisted.internet import reactor
from arachne import Arachne

app = Arachne(__name__)

resource = WSGIResource(reactor, reactor.getThreadPool(), app)
site = Site(resource)
reactor.listenTCP(8080, site)

if __name__ == '__main__':
    reactor.run()