scrapy rules do not call parsing method
I am new to scrapy and am trying to crawl a domain, following all internal links and scraping the title of url with the pattern /example/.*
crawling works, but the scraping of the title does not since the output file is empty. Most likely I got the rules wrong. Is this the right syntax using the rules in order to achieve what I am looking for?
import scrapy
class BidItem(scrapy.Item):
url = scrapy.Field()
title = scrapy.Field()
spider.py
import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule
from bid.items import BidItem
class GetbidSpider(CrawlSpider):
name = 'getbid'
allowed_domains = ['domain.de']
start_urls = ['https://www.domain.de/']
rules = (
Rule(
LinkExtractor(),
follow=True
),
Rule(
LinkExtractor(allow=['example/.*']),
callback='parse_item'
),
)
def parse_item(self, response):
href = BidItem()
href['url'] = response.url
href['title'] = response.css("h1::text").extract()
return href
crawl: scrapy crawl getbid -o 012916.csv
python scrapy scrapy-spider
edited Nov 22 at 19:45
stranac
13.5k31724
asked Nov 22 at 19:12
merlin
5901821
add a comment |
I am new to scrapy and am trying to crawl a domain, following all internal links and scraping the title of url with the pattern /example/.*
crawling works, but the scraping of the title does not since the output file is empty. Most likely I got the rules wrong. Is this the right syntax using the rules in order to achieve what I am looking for?
import scrapy
class BidItem(scrapy.Item):
url = scrapy.Field()
title = scrapy.Field()
spider.py
import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule
from bid.items import BidItem
class GetbidSpider(CrawlSpider):
name = 'getbid'
allowed_domains = ['domain.de']
start_urls = ['https://www.domain.de/']
rules = (
Rule(
LinkExtractor(),
follow=True
),
Rule(
LinkExtractor(allow=['example/.*']),
callback='parse_item'
),
)
def parse_item(self, response):
href = BidItem()
href['url'] = response.url
href['title'] = response.css("h1::text").extract()
return href
crawl: scrapy crawl getbid -o 012916.csv
python scrapy scrapy-spider
edited Nov 22 at 19:45
stranac
13.5k31724
asked Nov 22 at 19:12
merlin
5901821
add a comment |
I am new to scrapy and am trying to crawl a domain, following all internal links and scraping the title of url with the pattern /example/.*
crawling works, but the scraping of the title does not since the output file is empty. Most likely I got the rules wrong. Is this the right syntax using the rules in order to achieve what I am looking for?
import scrapy
class BidItem(scrapy.Item):
url = scrapy.Field()
title = scrapy.Field()
spider.py
import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule
from bid.items import BidItem
class GetbidSpider(CrawlSpider):
name = 'getbid'
allowed_domains = ['domain.de']
start_urls = ['https://www.domain.de/']
rules = (
Rule(
LinkExtractor(),
follow=True
),
Rule(
LinkExtractor(allow=['example/.*']),
callback='parse_item'
),
)
def parse_item(self, response):
href = BidItem()
href['url'] = response.url
href['title'] = response.css("h1::text").extract()
return href
crawl: scrapy crawl getbid -o 012916.csv
python scrapy scrapy-spider
edited Nov 22 at 19:45
stranac
13.5k31724
asked Nov 22 at 19:12
merlin
5901821
I am new to scrapy and am trying to crawl a domain, following all internal links and scraping the title of url with the pattern /example/.*
crawling works, but the scraping of the title does not since the output file is empty. Most likely I got the rules wrong. Is this the right syntax using the rules in order to achieve what I am looking for?
import scrapy
class BidItem(scrapy.Item):
url = scrapy.Field()
title = scrapy.Field()
spider.py
import scrapy
from scrapy.linkextractors import LinkExtractor
from scrapy.spiders import CrawlSpider, Rule
from bid.items import BidItem
class GetbidSpider(CrawlSpider):
name = 'getbid'
allowed_domains = ['domain.de']
start_urls = ['https://www.domain.de/']
rules = (
Rule(
LinkExtractor(),
follow=True
),
Rule(
LinkExtractor(allow=['example/.*']),
callback='parse_item'
),
)
def parse_item(self, response):
href = BidItem()
href['url'] = response.url
href['title'] = response.css("h1::text").extract()
return href
crawl: scrapy crawl getbid -o 012916.csv
python scrapy scrapy-spider
python scrapy scrapy-spider
edited Nov 22 at 19:45
stranac
13.5k31724
asked Nov 22 at 19:12
merlin
5901821
edited Nov 22 at 19:45
stranac
13.5k31724
asked Nov 22 at 19:12
merlin
5901821
edited Nov 22 at 19:45
stranac
13.5k31724
edited Nov 22 at 19:45
stranac
13.5k31724
edited Nov 22 at 19:45
stranac
13.5k31724
13.5k31724
asked Nov 22 at 19:12
merlin
5901821
asked Nov 22 at 19:12
merlin
5901821
asked Nov 22 at 19:12
merlin
5901821
5901821
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
From the CrawlSpider docs:
If multiple rules match the same link, the first one will be used,
according to the order they’re defined in this attribute.
Since your first rule will match all links, it will always be used and all other rules will be ignored.
Fixing the problem is as simple as switching the order of the rules.
answered Nov 22 at 19:52
stranac
13.5k31724
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
From the CrawlSpider docs:
If multiple rules match the same link, the first one will be used,
according to the order they’re defined in this attribute.
Since your first rule will match all links, it will always be used and all other rules will be ignored.
Fixing the problem is as simple as switching the order of the rules.
answered Nov 22 at 19:52
stranac
13.5k31724
add a comment |
From the CrawlSpider docs:
If multiple rules match the same link, the first one will be used,
according to the order they’re defined in this attribute.
Since your first rule will match all links, it will always be used and all other rules will be ignored.
Fixing the problem is as simple as switching the order of the rules.
answered Nov 22 at 19:52
stranac
13.5k31724
add a comment |
From the CrawlSpider docs:
If multiple rules match the same link, the first one will be used,
according to the order they’re defined in this attribute.
Since your first rule will match all links, it will always be used and all other rules will be ignored.
Fixing the problem is as simple as switching the order of the rules.
answered Nov 22 at 19:52
stranac
13.5k31724
From the CrawlSpider docs:
If multiple rules match the same link, the first one will be used,
according to the order they’re defined in this attribute.
Since your first rule will match all links, it will always be used and all other rules will be ignored.
Fixing the problem is as simple as switching the order of the rules.
answered Nov 22 at 19:52
stranac
13.5k31724
answered Nov 22 at 19:52
stranac
13.5k31724
answered Nov 22 at 19:52
stranac
13.5k31724
answered Nov 22 at 19:52
stranac
13.5k31724
13.5k31724
add a comment |
add a comment |
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