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selenium - python scrapy not crawling all urls in scraped list

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selenium - python scrapy not crawling all urls in scraped list

I am trying to scrape information from the pages listed on this page. https://pardo.ch/pardo/program/archive/2017/catalog-films.html

the xpath selector:

film_page_urls_startpage = sel.xpath('//article[@class="strip-list_link_all strip-list strip--color row row--5"]/a/@href').extract()

correctly scrapes all 23 urls. however, the spider doesn't even appear to try crawling all 23. it crawls only 11. the same 11 each time. since I'm using selenium, I can see it just jump right over the first page/url without ever navigating to it at all. what gives?

this is my code:

from scrapy import Spider
from scrapy.http import Request
from selenium import webdriver
from scrapy.selector import Selector
from time import sleep
from selenium.common.exceptions import NoSuchElementException
from scrapy.loader import ItemLoader
from films_locarno.items import FilmsLocarnoItemfrom scrapy import 

class FilmsLocarnoSpiderSpider(Spider):
name = 'films_locarno_spider'
allowed_domains = ['https://pardo.ch/']
start_urls = ['https://pardo.ch/pardo/program/archive/2017/catalog-films.html']

def start_requests(self):
    self.driver = webdriver.Firefox()
    self.driver.get('https://pardo.ch/pardo/program/archive/2017/catalog-films.html')
    sel = Selector(text=self.driver.page_source)

    #grab list of start pages for all 4/5 editions of festival available
    #list of film page urls on start page (letter A)
    film_page_urls_startpage = sel.xpath('//article[@class="strip-    list_link_all strip-list strip--color row row--5"]/a/@href').extract()
    film_page_urls_startpage_full = []
    for url in film_page_urls_startpage:
        film_page_fullurl = "https://pardo.ch" + url
        film_page_urls_startpage_full.append(film_page_fullurl)

    #navigate to startpage film_pages
    for url3 in film_page_urls_startpage_full:
        self.driver.get(url3)
        sel = Selector(text=self.driver.page_source)
        self.logger.info('Sleeping for 1 second')
        sleep(1)
        yield Request(url3, callback=self.parse_filmpage)
        self.logger.info('Sleeping for 2 seconds')
        sleep(2)

my output log reads [you can ignore the ERROR, its only a page navigation error, since fixed]:

    2017-12-26 09:29:33 [scrapy.utils.log] INFO: Scrapy 1.4.0 started (bot: films_locarno)
2017-12-26 09:29:33 [scrapy.utils.log] INFO: Overridden settings: {'SPIDER_MODULES': ['films_locarno.spiders'], 'BOT_NAME': 'films_locarno', 'NEWSPIDER_MODULE': 'films_locarno.spiders', 'FEED_URI': 'films_locarno6.csv', 'FEED_FORMAT': 'csv'}
2017-12-26 09:29:33 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.memusage.MemoryUsage',
 'scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.logstats.LogStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.feedexport.FeedExporter']
2017-12-26 09:29:33 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
 'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
 'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
 'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
 'scrapy.downloadermiddlewares.retry.RetryMiddleware',
 'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
 'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
 'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
 'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
 'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware',
 'scrapy.downloadermiddlewares.stats.DownloaderStats']
2017-12-26 09:29:33 [scrapy.middleware] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
 'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
 'scrapy.spidermiddlewares.referer.RefererMiddleware',
 'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
 'scrapy.spidermiddlewares.depth.DepthMiddleware']
2017-12-26 09:29:33 [scrapy.middleware] INFO: Enabled item pipelines:
['scrapy.pipelines.images.ImagesPipeline']
2017-12-26 09:29:33 [scrapy.core.engine] INFO: Spider opened
2017-12-26 09:29:33 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2017-12-26 09:29:33 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6024
2017-12-26 09:29:34 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session {"capabilities": {"firstMatch": [], "alwaysMatch": {"browserName": "firefox", "acceptInsecureCerts": true}}, "desiredCapabilities": {"browserName": "firefox", "acceptInsecureCerts": true}}
2017-12-26 09:29:41 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:29:41 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/catalog-films.html"}
2017-12-26 09:29:52 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:29:52 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:29:52 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:29:52 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=955449&eid=70"}
2017-12-26 09:29:56 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:29:56 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:29:56 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:29:56 [films_locarno_spider] INFO: Sleeping for 1 second
2017-12-26 09:29:57 [films_locarno_spider] INFO: Sleeping for 2 seconds
2017-12-26 09:29:59 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=959423&eid=70"}
2017-12-26 09:30:03 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:03 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:30:03 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:03 [films_locarno_spider] INFO: Sleeping for 1 second
2017-12-26 09:30:04 [films_locarno_spider] INFO: Sleeping for 2 seconds
2017-12-26 09:30:06 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=968681&eid=70"}
2017-12-26 09:30:09 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:09 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:30:09 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:09 [films_locarno_spider] INFO: Sleeping for 1 second
2017-12-26 09:30:10 [films_locarno_spider] INFO: Sleeping for 2 seconds
2017-12-26 09:30:12 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=959475&eid=70"}
2017-12-26 09:30:14 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:14 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:30:14 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:14 [films_locarno_spider] INFO: Sleeping for 1 second
2017-12-26 09:30:15 [films_locarno_spider] INFO: Sleeping for 2 seconds
2017-12-26 09:30:17 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=960897&eid=70"}
2017-12-26 09:30:19 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:19 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:30:19 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:19 [films_locarno_spider] INFO: Sleeping for 1 second
2017-12-26 09:30:20 [films_locarno_spider] INFO: Sleeping for 2 seconds
2017-12-26 09:30:22 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=960706&eid=70"}
2017-12-26 09:30:25 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:25 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:30:25 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:25 [films_locarno_spider] INFO: Sleeping for 1 second
2017-12-26 09:30:26 [films_locarno_spider] INFO: Sleeping for 2 seconds
2017-12-26 09:30:28 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=929220&eid=70"}
2017-12-26 09:30:32 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:32 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/source {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a"}
2017-12-26 09:30:32 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:32 [films_locarno_spider] INFO: Sleeping for 1 second
2017-12-26 09:30:33 [films_locarno_spider] INFO: Sleeping for 2 seconds
2017-12-26 09:30:35 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534994c97a/url {"sessionId": "1a43ebe2-5161-ba45-acd6-31534994c97a", "url": "https://pardo.ch/pardo/program/archive/2017/film.html?fid=960742&eid=70"}
2017-12-26 09:30:38 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-12-26 09:30:38 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:54941/session/1a43ebe2-5161-ba45-acd6-31534

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1 Answer

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by (71.8m points)

I checked this

len(film_page_urls_startpage)

and I get only 11, not 23.

If I use xpath('//article/a/@href') then I get 23 urls.

There is no need to add @class. There is no other article.

EDIT:

If I do

for item in sel.xpath('//article/@class').extract():
    print('class:', item)

then I get 

class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even
class: strip-list_link_all strip-list strip--color row row--5
class: strip-list_link_all strip-list strip--color row row--5 even

So some items have even in class string and this was your problem.


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