I am trying to write a web crawler using scrapy and PyQuery.The full spider code is as follows.
from scrapy import Spider
from scrapy.spiders import CrawlSpider, Rule
from scrapy.linkextractors import LinkExtractor
class gotspider(CrawlSpider):
name='gotspider'
allowed_domains=['fundrazr.com']
start_urls = ['https://fundrazr.com/find?category=Health']
rules = [
Rule(LinkExtractor(allow=('/find/category=Health')), callback='parse',follow=True)
]
def parse(self, response):
self.logger.info('A response from %s just arrived!', response.url)
print(response.body)
The web page skeleton
<div id="header">
<h2 class="title"> Township </h2>
<p><strong>Client: </strong> Township<br>
<strong>Location: </strong>Pennsylvania<br>
<strong>Size: </strong>54,000 SF</p>
</div>
output of the crawler, The crawler fetches the Requesting URL and its hitting the correct web target but the parse_item or parse method is not getting the response. The Response.URL is not printing. I tried to verify this by running the spider without logs scrapy crawl rsscrach--nolog but nothing is printed as logs. The problem is very granular.
2017-11-26 18:07:12 [scrapy.utils.log] INFO: Scrapy 1.4.0 started (bot: rsscrach)
2017-11-26 18:07:12 [scrapy.utils.log] INFO: Overridden settings: {'BOT_NAME': 'rsscrach', 'NEWSPIDER_MODULE': 'rsscrach.spiders', 'ROBOTSTXT_OBEY': True, 'SPIDER_MODULES': ['rsscrach.spiders']}
2017-11-26 18:07:12 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
'scrapy.extensions.telnet.TelnetConsole',
'scrapy.extensions.memusage.MemoryUsage',
'scrapy.extensions.logstats.LogStats']
2017-11-26 18:07:12 [scrapy.middleware] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware',
'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']
2017-11-26 18:07:12 [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']
2017-11-26 18:07:12 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2017-11-26 18:07:12 [scrapy.core.engine] INFO: Spider opened
2017-11-26 18:07:12 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2017-11-26 18:07:12 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6024
2017-11-26 18:07:13 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://fundrazr.com/robots.txt> (referer: None)
2017-11-26 18:07:14 [scrapy.core.engine] DEBUG: Crawled (200) <GET https://fundrazr.com/find?category=Health> (referer: None)
2017-11-26 18:07:15 [scrapy.core.engine] INFO: Closing spider (finished)
2017-11-26 18:07:15 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 605,
'downloader/request_count': 2,
'downloader/request_method_count/GET': 2,
'downloader/response_bytes': 13510,
'downloader/response_count': 2,
'downloader/response_status_count/200': 2,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2017, 11, 26, 10, 7, 15, 46516),
'log_count/DEBUG': 3,
'log_count/INFO': 7,
'memusage/max': 52465664,
'memusage/startup': 52465664,
'response_received_count': 2,
'scheduler/dequeued': 1,
'scheduler/dequeued/memory': 1,
'scheduler/enqueued': 1,
'scheduler/enqueued/memory': 1,
'start_time': datetime.datetime(2017, 11, 26, 10, 7, 12, 198182)}
2017-11-26 18:07:15 [scrapy.core.engine] INFO: Spider closed (finished)
How do I get the Client, Location and Size of the attributes ?
I made standalone script with Scrapy which test different methods to get data and it works without problem. Maybe it helps you find your problem.
import scrapy
import pyquery
class MySpider(scrapy.Spider):
name = 'myspider'
start_urls = ['https://fundrazr.com/find?category=Health']
def parse(self, response):
print('--- css 1 ---')
for title in response.css('h2'):
print('>>>', title)
print('--- css 2 ---')
for title in response.css('h2'):
print('>>>', title.extract()) # without _first())
print('>>>', title.css('a').extract_first())
print('>>>', title.css('a ::text').extract_first())
print('-----')
print('--- css 3 ---')
for title in response.css('h2 a ::text'):
print('>>>', title.extract()) # without _first())
print('--- pyquery 1 ---')
p = pyquery.PyQuery(response.body)
for title in p('h2'):
print('>>>', title, title.text, '<<<') # `title.text` gives "\n"
print('--- pyquery 2 ---')
p = pyquery.PyQuery(response.body)
for title in p('h2').text():
print('>>>', title)
print(p('h2').text())
print('--- pyquery 3 ---')
p = pyquery.PyQuery(response.body)
for title in p('h2 a'):
print('>>>', title, title.text)
# ---------------------------------------------------------------------
from scrapy.crawler import CrawlerProcess
process = CrawlerProcess({
'USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)'
})
process.crawl(MySpider)
process.start()