Issue with running scrapy spider from script.

[tituskex]

Hi, I'm trying to run scrapy from a script like this:

import scrapy
from scrapy.crawler import CrawlerProcess

class MySpider(scrapy.Spider):
    name = "basic"
    allowed_domains = ["web"]
    start_urls = ['http://www.example.com']

    def parse(self, response):
        l = ItemLoader(item=PropertiesItem(), response = response)
        l.add_xpath('title', '//h1[1]/text()')

        return l.load_item()
process = CrawlerProcess({
    'USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)'
})

process.crawl(MySpider)
process.start()

However, when I run this script I get the following error:

File "/Library/Python/2.7/site-packages/Twisted-16.7.0rc1-py2.7-macosx-10.11-
intel.egg/twisted/internet/_sslverify.py", line 38, in <module>
TLSVersion.TLSv1_1: SSL.OP_NO_TLSv1_1,
AttributeError: 'module' object has no attribute 'OP_NO_TLSv1_1'

Does anyone know how to fix this? Thanks in advance.

[IAlwaysBeCoding]

I would try to downgrade your twisted version from Twisted==16.7.0rc1 to Twisted==16.4.1. I got some weird errors too on the downloader part when I ran my Scrapy spiders with the same version you are running.

2017-01-02 14:25:00 [scrapy] ERROR: Error downloading <GET http://www.citysearch.com/profile/645344264/jackson_ms/wright_patrick_b_md_patrick_b_wright_md.html>
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1297, in _inlineCallbacks
    result = result.throwExceptionIntoGenerator(g)
  File "/usr/local/lib/python2.7/dist-packages/twisted/python/failure.py", line 393, in throwExceptionIntoGenerator
    return g.throw(self.type, self.value, self.tb)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/downloader/middleware.py", line 43, in process_request
    defer.returnValue((yield download_func(request=request,spider=spider)))
  File "/usr/local/lib/python2.7/dist-packages/scrapy/utils/defer.py", line 45, in mustbe_deferred
    result = f(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/downloader/handlers/__init__.py", line 65, in download_request
    return handler.download_request(request, spider)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/downloader/handlers/http11.py", line 60, in download_request
    return agent.download_request(request)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/core/downloader/handlers/http11.py", line 285, in download_request
    method, to_bytes(url, encoding='ascii'), headers, bodyproducer)
  File "/usr/local/lib/python2.7/dist-packages/twisted/web/client.py", line 1631, in request
    parsedURI.originForm)
  File "/usr/local/lib/python2.7/dist-packages/twisted/web/client.py", line 1408, in _requestWithEndpoint
    d = self._pool.getConnection(key, endpoint)
  File "/usr/local/lib/python2.7/dist-packages/twisted/web/client.py", line 1294, in getConnection
    return self._newConnection(key, endpoint)
  File "/usr/local/lib/python2.7/dist-packages/twisted/web/client.py", line 1306, in _newConnection
    return endpoint.connect(factory)
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/endpoints.py", line 779, in connect
    EndpointReceiver, self._hostText, portNumber=self._port
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/_resolver.py", line 174, in resolveHostName
    onAddress = self._simpleResolver.getHostByName(hostName)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/resolver.py", line 21, in getHostByName
    d = super(CachingThreadedResolver, self).getHostByName(name, timeout)
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/base.py", line 276, in getHostByName
    timeoutDelay = sum(timeout)
TypeError: 'float' object is not iterable

After, downgrading to the version I had(Twisted==16.4.1) things went back to working great again.

command: pip install Twisted==16.4.1
If you need sudo access then add it to your command.

[IAlwaysBeCoding]

#2479 This is related to this one as well.

[redapple]

@tituskex , did you manage to make it work?
did downgrading Twisted work?

[pembeci]

Downgrading Twisted worked for me too.

[kmike]

@pembeci what is your Scrapy version?

[pembeci]

@kmike The latest from pip install: 1.3.2. I am running on an old machine which is not upgraded for a while: Ubuntu 12.04 LTS - 32 bit
So may be that's why I needed to downgrade Twisted.

[kmike]

@pembeci what was the exception?
Hm, maybe it is caused by Twisted 17+ dropping pyOpenSSL < 0.16 support.

[rmax]

@pembeci I would recommend to use (mini)conda to have the latest releases without having to upgrade system libraries in old systems.

[wzpan]

+1 . Same problem with scrapy (1.3.2) and twisted (17.1.0) .

  File "/Library/Python/2.7/site-packages/twisted/protocols/tls.py", line 63, in <module>
    from twisted.internet._sslverify import _setAcceptableProtocols
  File "/Library/Python/2.7/site-packages/twisted/internet/_sslverify.py", line 38, in <module>
    TLSVersion.TLSv1_1: SSL.OP_NO_TLSv1_1,
AttributeError: 'module' object has no attribute 'OP_NO_TLSv1_1'

[kmike]

@wzpan what is your pyOpenSSL version?

Twisted dropped support for pyOpenSSL < 16.0.0 in Twisted 16.4.0 release (see http://twistedmatrix.com/trac/ticket/8441); in fact it worked for some time, but they recently removed some of the supporting code as well. Is upgrading it an option? You can check pyOpenSSL version by running python -c 'import OpenSSL; print(OpenSSL.version.__version__)'

[wzpan]

@kmike awesome! 👍
My pyOpenSSL version is 0.13.1. After upgrading it to 16.2.0, scrapy works like a charm!

[noprom]

I run into this problem, too.
Here is my stacktrace:

➜  ~ scrapy shell 'http://jbk.39.net/bw_t1/'
Traceback (most recent call last):
  File "/usr/local/bin/scrapy", line 7, in <module>
    from scrapy.cmdline import execute
  File "/Library/Python/2.7/site-packages/scrapy/cmdline.py", line 9, in <module>
    from scrapy.crawler import CrawlerProcess
  File "/Library/Python/2.7/site-packages/scrapy/crawler.py", line 7, in <module>
    from twisted.internet import reactor, defer
  File "/Library/Python/2.7/site-packages/twisted/internet/reactor.py", line 38, in <module>
    from twisted.internet import default
  File "/Library/Python/2.7/site-packages/twisted/internet/default.py", line 56, in <module>
    install = _getInstallFunction(platform)
  File "/Library/Python/2.7/site-packages/twisted/internet/default.py", line 50, in _getInstallFunction
    from twisted.internet.selectreactor import install
  File "/Library/Python/2.7/site-packages/twisted/internet/selectreactor.py", line 18, in <module>
    from twisted.internet import posixbase
  File "/Library/Python/2.7/site-packages/twisted/internet/posixbase.py", line 18, in <module>
    from twisted.internet import error, udp, tcp
  File "/Library/Python/2.7/site-packages/twisted/internet/tcp.py", line 28, in <module>
    from twisted.internet._newtls import (
  File "/Library/Python/2.7/site-packages/twisted/internet/_newtls.py", line 21, in <module>
    from twisted.protocols.tls import TLSMemoryBIOFactory, TLSMemoryBIOProtocol
  File "/Library/Python/2.7/site-packages/twisted/protocols/tls.py", line 63, in <module>
    from twisted.internet._sslverify import _setAcceptableProtocols
  File "/Library/Python/2.7/site-packages/twisted/internet/_sslverify.py", line 38, in <module>
    TLSVersion.TLSv1_1: SSL.OP_NO_TLSv1_1,
AttributeError: 'module' object has no attribute 'OP_NO_TLSv1_1'

Version:

➜  ~ python --version
Python 2.7.10
➜  ~ pip list | grep Scrapy
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
Scrapy (1.2.1)

Any help would be appreciated.

[wzpan]

@noprom Try doing these:

pip install --upgrade scrapy
pip install --upgrade twisted
pip install --upgrade pyopenssl

[noprom]

@wzpan
But another problem occurs:

➜  OS scrapy shell 'http://jbk.39.net/bw_t1/'
2017-03-02 20:31:05 [scrapy.utils.log] INFO: Scrapy 1.3.2 started (bot: scrapybot)
2017-03-02 20:31:05 [scrapy.utils.log] INFO: Overridden settings: {'LOGSTATS_INTERVAL': 0, 'DUPEFILTER_CLASS': 'scrapy.dupefilters.BaseDupeFilter'}
2017-03-02 20:31:05 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.corestats.CoreStats']
2017-03-02 20:31:05 [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.stats.DownloaderStats']
2017-03-02 20:31:05 [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']
2017-03-02 20:31:05 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2017-03-02 20:31:05 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6023
2017-03-02 20:31:05 [scrapy.core.engine] INFO: Spider opened
2017-03-02 20:31:05 [scrapy.downloadermiddlewares.retry] DEBUG: Retrying <GET http://jbk.39.net/bw_t1/> (failed 1 times): [<twisted.python.failure.Failure twisted.internet.error.ConnectionDone: Connection was closed cleanly.>]
2017-03-02 20:31:05 [scrapy.downloadermiddlewares.retry] DEBUG: Retrying <GET http://jbk.39.net/bw_t1/> (failed 2 times): [<twisted.python.failure.Failure twisted.internet.error.ConnectionDone: Connection was closed cleanly.>]
2017-03-02 20:31:05 [scrapy.downloadermiddlewares.retry] DEBUG: Gave up retrying <GET http://jbk.39.net/bw_t1/> (failed 3 times): [<twisted.python.failure.Failure twisted.internet.error.ConnectionDone: Connection was closed cleanly.>]
Traceback (most recent call last):
  File "/usr/local/bin/scrapy", line 11, in <module>
    sys.exit(execute())
  File "/Library/Python/2.7/site-packages/scrapy/cmdline.py", line 142, in execute
    _run_print_help(parser, _run_command, cmd, args, opts)
  File "/Library/Python/2.7/site-packages/scrapy/cmdline.py", line 88, in _run_print_help
    func(*a, **kw)
  File "/Library/Python/2.7/site-packages/scrapy/cmdline.py", line 149, in _run_command
    cmd.run(args, opts)
  File "/Library/Python/2.7/site-packages/scrapy/commands/shell.py", line 73, in run
    shell.start(url=url, redirect=not opts.no_redirect)
  File "/Library/Python/2.7/site-packages/scrapy/shell.py", line 48, in start
    self.fetch(url, spider, redirect=redirect)
  File "/Library/Python/2.7/site-packages/scrapy/shell.py", line 115, in fetch
    reactor, self._schedule, request, spider)
  File "/Library/Python/2.7/site-packages/twisted/internet/threads.py", line 122, in blockingCallFromThread
    result.raiseException()
  File "<string>", line 2, in raiseException
twisted.web._newclient.ResponseNeverReceived: [<twisted.python.failure.Failure twisted.internet.error.ConnectionDone: Connection was closed cleanly.>]

It seems that there's a problem with twisted.