Spider arguments are passed in the crawl
command using the -a
option. For example:
scrapy crawl myspider -a category=electronics -a domain=system
Spiders can access arguments as attributes:
class MySpider(scrapy.Spider):
name="myspider"
def __init__(self, category='', **kwargs):
self.start_urls = [f'http://www.example.com/{category}'] # py36
super().__init__(**kwargs) # python3
def parse(self, response)
self.log(self.domain) # system
Taken from the Scrapy doc: http://doc.scrapy.org/en/latest/topics/spiders.html#spider-arguments
Update 2013: Add second argument
Update 2015: Adjust wording
Update 2016: Use newer base class and add super, thanks @Birla
Update 2017: Use Python3 super
# previously
super(MySpider, self).__init__(**kwargs) # python2
Update 2018: As @eLRuLL points out, spiders can access arguments as attributes