从网址列表中抓取Python

时间：2019-02-11 15:23:16

标签： python csv scrapy

我打算打开一个CSV文件，其中包含许多我要抓取的URL。但是，在运行请求时，我只收到一个空白文档。将URL直接输入Python代码时，一切正常。

我的想法是CSV文件可能有问题，因为代码似乎与其他用户的工作保持一致。

与scraper保存在同一文件夹中的CSV文件当前的格式如下：

'https://www.google.com/search?q=elon+musk&source=lnt&tbs=cdr%3A1%2Ccd_min%3A1%2F1%2F2015%2Ccd_max%3A12%2F31%2F2015&tbm=nws', 'https://www.google.com/search?q=elon+musk&source=lnt&tbs=cdr%3A1%2Ccd_min%3A1%2F1%2F2016%2Ccd_max%3A12%2F31%2F2016&tbm=nws', 'https://www.google.com/search?q=elon+musk&source=lnt&tbs=cdr%3A1%2Ccd_min%3A1%2F1%2F2017%2Ccd_max%3A12%2F31%2F2017&tbm=nws',

有人知道我收到空白文件的原因吗？也请在下面找到我正在使用的Python代码：

import scrapy

class TermSpider(scrapy.Spider):
    name = 'TermCheck'
    allowed_domains = ['google.com']

with open('urls.csv') as file:
    start_urls = [line.strip() for line in file]

    def parse(self, response):
        item = {
            'search_title': response.css('input#sbhost::attr(value)').get(),
            'results': response.css('#resultStats::text').get(),
            'url': response.url,
        }
        yield item

请在运行跟踪下方找到：

2019-02-11 15:30:19 [scrapy.utils.log] INFO: Scrapy 1.6.0 started (bot: scrapybot)
2019-02-11 15:30:19 [scrapy.utils.log] INFO: Versions: lxml 4.3.0.0, libxml2 2.9.9, cssselect 1.0.3, parsel 1.5.1, w3lib 1.20.0, Twisted 18.9.0, Python 3.7.2 (v3.7.2:9a3ffc0492, Dec 24 2018, 02:44:43) - [Clang 6.0 (clang-600.0.57)], pyOpenSSL 19.0.0 (OpenSSL 1.1.1a  20 Nov 2018), cryptography 2.5, Platform Darwin-18.0.0-x86_64-i386-64bit
2019-02-11 15:30:19 [scrapy.crawler] INFO: Overridden settings: {'FEED_FORMAT': 'csv', 'FEED_URI': 'quote7.csv', 'SPIDER_LOADER_WARN_ONLY': True}
2019-02-11 15:30:19 [scrapy.extensions.telnet] INFO: Telnet Password: 9e547af3b30153c7
2019-02-11 15:30:19 [scrapy.middleware] INFO: Enabled extensions:
['scrapy.extensions.corestats.CoreStats',
 'scrapy.extensions.telnet.TelnetConsole',
 'scrapy.extensions.memusage.MemoryUsage',
 'scrapy.extensions.feedexport.FeedExporter',
 'scrapy.extensions.logstats.LogStats']
2019-02-11 15:30:19 [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']
2019-02-11 15:30:19 [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']
2019-02-11 15:30:19 [scrapy.middleware] INFO: Enabled item pipelines:
[]
2019-02-11 15:30:19 [scrapy.core.engine] INFO: Spider opened
2019-02-11 15:30:19 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2019-02-11 15:30:19 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2019-02-11 15:30:19 [scrapy.core.scraper] ERROR: Error downloading <GET 'https://www.google.com/search?q=elon+musk&source=lnt&tbs=cdr%3A1%2Ccd_min%3A1%2F1%2F2015%2Ccd_max%3A12%2F31%2F2015&tbm=nws'>
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/twisted/internet/defer.py", line 1416, in _inlineCallbacks
result = result.throwExceptionIntoGenerator(g)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/twisted/python/failure.py", line 491, in throwExceptionIntoGenerator
return g.throw(self.type, self.value, self.tb)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/core/downloader/middleware.py", line 43, in process_request
  defer.returnValue((yield download_func(request=request,spider=spider)))
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/utils/defer.py", line 45, in mustbe_deferred
result = f(*args, **kw)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/core/downloader/handlers/__init__.py", line 70, in download_request
(scheme, self._notconfigured[scheme]))
scrapy.exceptions.NotSupported: Unsupported URL scheme '': no handler available for that scheme
2019-02-11 15:30:19 [scrapy.core.scraper] ERROR: Error downloading <GET 'https://www.google.com/search?q=elon+musk&source=lnt&tbs=cdr%3A1%2Ccd_min%3A1%2F1%2F2016%2Ccd_max%3A12%2F31%2F2016&tbm=nws'>
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/twisted/internet/defer.py", line 1416, in _inlineCallbacks
result = result.throwExceptionIntoGenerator(g)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/twisted/python/failure.py", line 491, in throwExceptionIntoGenerator
return g.throw(self.type, self.value, self.tb)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/core/downloader/middleware.py", line 43, in process_request
 defer.returnValue((yield download_func(request=request,spider=spider)))
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/utils/defer.py", line 45, in mustbe_deferred
result = f(*args, **kw)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/core/downloader/handlers/__init__.py", line 70, in download_request
(scheme, self._notconfigured[scheme]))
scrapy.exceptions.NotSupported: Unsupported URL scheme '': no handler available for that scheme
2019-02-11 15:30:19 [scrapy.core.scraper] ERROR: Error downloading <GET 'https://www.google.com/search?q=elon+musk&source=lnt&tbs=cdr%3A1%2Ccd_min%3A1%2F1%2F2017%2Ccd_max%3A12%2F31%2F2017&tbm=nws'>
Traceback (most recent call last):
 File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/twisted/internet/defer.py", line 1416, in _inlineCallbacks
result = result.throwExceptionIntoGenerator(g)
 File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/twisted/python/failure.py", line 491, in throwExceptionIntoGenerator
 return g.throw(self.type, self.value, self.tb)
 File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/core/downloader/middleware.py", line 43, in process_request
defer.returnValue((yield download_func(request=request,spider=spider)))
 File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/utils/defer.py", line 45, in mustbe_deferred
result = f(*args, **kw)
 File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/scrapy/core/downloader/handlers/__init__.py", line 70, in download_request
(scheme, self._notconfigured[scheme]))
 scrapy.exceptions.NotSupported: Unsupported URL scheme '': no handler available for that scheme
2019-02-11 15:30:19 [scrapy.core.engine] INFO: Closing spider (finished)
2019-02-11 15:30:19 [scrapy.statscollectors] INFO: Dumping Scrapy stats:
{'downloader/exception_count': 3,
 'downloader/exception_type_count/scrapy.exceptions.NotSupported': 3,
 'downloader/request_bytes': 966,
 'downloader/request_count': 3,
 'downloader/request_method_count/GET': 3,
 'finish_reason': 'finished',
 'finish_time': datetime.datetime(2019, 2, 11, 15, 30, 19, 829530),
 'log_count/ERROR': 3,
 'log_count/INFO': 9,
 'memusage/max': 50180096,
 'memusage/startup': 50180096,
 'scheduler/dequeued': 3,
 'scheduler/dequeued/memory': 3,
 'scheduler/enqueued': 3,
 'scheduler/enqueued/memory': 3,
 'start_time': datetime.datetime(2019, 2, 11, 15, 30, 19, 485355)}
2019-02-11 15:30:19 [scrapy.core.engine] INFO: Spider closed (finished)

1 个答案:

答案 0 :(得分：3)

检查班级中的缩进或将文件重构为：

<div id="ytplayer">
<script>
  var tag = document.createElement('script');
  tag.src = "https://www.youtube.com/player_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
  var player;
  function onYouTubePlayerAPIReady() {
    player = new YT.Player('ytplayer', {
      width: '640',
      height: '360',

          // 1. Video_Id
          videoId: 'AfAwsdbj04I',

      playerVars: { 
          autoplay: 1,
          loop: 1,
          controls: 0,
          rel: 0,
          modestbranding: 1,

          // 2. Playlist_Id (don't forget "PL")
          playlist: 'PLxWQS97ZR2-_c2eqKxSHxEu7v462-qnYM'

      },
      events: {
        'onReady': onPlayerReady,
        'onStateChange': onPlayerStateChange
      }
    });
  }
  function onPlayerReady(event) {
    event.target.setVolume(80);
    event.target.playVideo();
 //  player.mute();
  }
  function onPlayerStateChange(event) {
    if (event.data == YT.PlayerState.ENDED) {
      player.seekTo(0);
      player.playVideo();
    }
  }
  function stopVideo() {
    player.stopVideo();
  }
</script>
</div>

还请检查您的csv文件并删除引号和逗号。

相关问题
最新问题