处理报纸中的文章异常

Question

我有一些代码可以使用报纸查看各种媒体并从中下载文章。这已经运行了很长时间，但最近开始出现问题。我可以看出问题所在，但由于我是 Python 的新手，所以我不确定解决该问题的最佳方法。基本上（我认为）我需要进行修改以防止偶尔的格式错误的网址完全崩溃脚本，而是允许它放弃该网址并继续使用其他网址。

错误的来源是当我尝试使用以下方式下载文章时：

article.download()

有些文章（很明显他们每天都在变）会抛出下面的错误但是脚本继续到运行:

    Traceback (most recent call last):
      File "C:\Anaconda3\lib\encodings\idna.py", line 167, in encode
        raise UnicodeError("label too long")
   UnicodeError: label too long

   The above exception was the direct cause of the following exception:

   Traceback (most recent call last):
     File "C:\Anaconda3\lib\site-packages\newspaper\mthreading.py", line 38, in run
       func(*args, **kargs)
     File "C:\Anaconda3\lib\site-packages\newspaper\source.py", line 350, in download_articles
       html = network.get_html(url, config=self.config)
     File "C:\Anaconda3\lib\site-packages\newspaper\network.py", line 39, in get_html return get_html_2XX_only(url, config, response)
     File "C:\Anaconda3\lib\site-packages\newspaper\network.py", line 60, in get_html_2XX_only url=url, **get_request_kwargs(timeout, useragent))
     File "C:\Anaconda3\lib\site-packages\requests\api.py", line 72, in get return request('get', url, params=params, **kwargs)
     File "C:\Anaconda3\lib\site-packages\requests\api.py", line 58, in request return session.request(method=method, url=url, **kwargs)
     File "C:\Anaconda3\lib\site-packages\requests\sessions.py", line 502, in request resp = self.send(prep, **send_kwargs)
     File "C:\Anaconda3\lib\site-packages\requests\sessions.py", line 612, in send r = adapter.send(request, **kwargs)
     File "C:\Anaconda3\lib\site-packages\requests\adapters.py", line 440, in send timeout=timeout
     File "C:\Anaconda3\lib\site-packages\urllib3\connectionpool.py", line 600, in urlopen chunked=chunked)
     File "C:\Anaconda3\lib\site-packages\urllib3\connectionpool.py", line 356, in _make_request conn.request(method, url, **httplib_request_kw)
     File "C:\Anaconda3\lib\http\client.py", line 1107, in request self._send_request(method, url, body, headers)
     File "C:\Anaconda3\lib\http\client.py", line 1152, in _send_request self.endheaders(body)
     File "C:\Anaconda3\lib\http\client.py", line 1103, in endheaders     self._send_output(message_body)
     File "C:\Anaconda3\lib\http\client.py", line 934, in _send_output self.send(msg)
     File "C:\Anaconda3\lib\http\client.py", line 877, in send     self.connect()
     File "C:\Anaconda3\lib\site-packages\urllib3\connection.py", line 166, in connect conn = self._new_conn()
     File "C:\Anaconda3\lib\site-packages\urllib3\connection.py", line 141, in _new_conn  (self.host, self.port), self.timeout, **extra_kw)
     File "C:\Anaconda3\lib\site-packages\urllib3\util\connection.py", line 60, in create_connection for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
     File "C:\Anaconda3\lib\socket.py", line 733, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
 UnicodeError: encoding with 'idna' codec failed (UnicodeError: label too long)

接下来应该对每篇文章进行解析和运行自然语言处理，并将某些元素写入数据框，这样我就有了：

for paper in papers:    
for article in paper.articles:
    article.parse()
    print(article.title)
    article.nlp()
    if article.publish_date is None:
        d = datetime.now().date()
    else:
        d = article.publish_date.date()
    stories.loc[i] = [paper.brand, d, datetime.now().date(), article.title, article.summary, article.keywords, article.url]
    i += 1

（这可能也有点草率，但这是另一天的问题）

这运行很好，直到它到达其中一个有错误的 URL，然后抛出文章异常并且脚本崩溃：

    C:\Anaconda3\lib\site-packages\PIL\TiffImagePlugin.py:709: UserWarning: Corrupt EXIF data.  Expecting to read 2 bytes but only got 0.
   warnings.warn(str(msg))

   ArticleException                          Traceback (most recent call last) <ipython-input-17-2106485c4bbb> in <module>()
          4 for paper in papers:
          5     for article in paper.articles:
    ----> 6         article.parse()
          7         print(article.title)
          8         article.nlp()

   C:\Anaconda3\lib\site-packages\newspaper\article.py in parse(self)
       183 
       184     def parse(self):
   --> 185         self.throw_if_not_downloaded_verbose()
       186 
       187         self.doc = self.config.get_parser().fromstring(self.html)

   C:\Anaconda3\lib\site-packages\newspaper\article.py in throw_if_not_downloaded_verbose(self)
       519         if self.download_state == ArticleDownloadState.NOT_STARTED:
       520             print('You must `download()` an article first!')
   --> 521             raise ArticleException()
       522         elif self.download_state == ArticleDownloadState.FAILED_RESPONSE:
       523             print('Article `download()` failed with %s on URL %s' %

  ArticleException:

那么防止此问题终止我的脚本的最佳方法是什么？我应该在出现 unicode 错误的下载阶段解决它，还是在解析阶段通过告诉它忽略那些错误地址来解决它？我将如何着手实施该更正？

非常感谢任何建议。

Answer 1

我遇到了同样的问题，虽然通常使用 除了：不推荐通过 ，但以下对我有用：

    try:
        a.parse()
        file.write( a.title+'\n')
    except :
        pass

Answer 2

我发现 Navid 对于这个确切问题是正确的。

然而，.parse() 只是可能使您出错的函数之一。我将所有调用包装在 try / accept 结构中，如下所示：

word_list = []

for words in google_news.articles:

try:
    words.download()
    words.parse()
    words.nlp()

except:
    pass

word_list.append(words.keywords)

Answer 3

您可以尝试捕获 ArticleException。不要忘记 import 报纸模块。

try:
  article.download()
  article.parse()
except newspaper.article.ArticleException:
  # do something

处理报纸中的文章异常

Handling Article Exceptions in Newspaper

python

web-scraping

nlp

python-newspaper