TypeError: XXXXX got an unexpected keyword argument 'XXXXXX'

Question

我从运行代码中得到了一个意外的关键字参数。资料来源：https://sempioneer.com/python-for-seo/how-to-extract-text-from-multiple-webpages-in-python/ 有人可以帮忙吗？谢谢

运行下面的代码：

single_url = 'https://understandingdata.com/'
text = extract_text_from_single_web_page(url=single_url)
print(text)

给出以下错误：

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_10260/3606377172.py in <module>
      1 single_url = 'https://understandingdata.com/'
----> 2 text = extract_text_from_single_web_page(url=single_url)
      3 print(text)

~\AppData\Local\Temp/ipykernel_10260/850098094.py in extract_text_from_single_web_page(url)
     42     try:
     43         a = trafilatura.extract(downloaded_url, json_output=True, with_metadata=True, include_comments = False,
---> 44                             date_extraction_params={'extensive_search': True, 'original_date': True})
     45     except AttributeError:
     46         a = trafilatura.extract(downloaded_url, json_output=True, with_metadata=True,

TypeError: extract() got an unexpected keyword argument 'json_output'

“extract_text_from_single_web_page(url=single_url)

的代码

def extract_text_from_single_web_page(url):
    
    downloaded_url = trafilatura.fetch_url(url)
    try:
        a = trafilatura.extract(downloaded_url, json_output=True, with_metadata=True, include_comments = False,
                            date_extraction_params={'extensive_search': True, 'original_date': True})
    except AttributeError:
        a = trafilatura.extract(downloaded_url, json_output=True, with_metadata=True,
                            date_extraction_params={'extensive_search': True, 'original_date': True})
    if a:
        json_output = json.loads(a)
        return json_output['text']
    else:
        try:
            resp = requests.get(url)
            # We will only extract the text from successful requests:
            if resp.status_code == 200:
                return beautifulsoup_extract_text_fallback(resp.content)
            else:
                # This line will handle for any failures in both the Trafilature and BeautifulSoup4 functions:
                return np.nan
        # Handling for any URLs that don't have the correct protocol
        except MissingSchema:
            return np.nan

Answer 1

正如我在评论中所建议的那样，最好的选择是找到一个不使用 trafilatura 的教程，因为这似乎是坏掉的东西。但是，修改此特定函数以避免它并仅使用回退非常简单：

def extract_text_from_single_web_page(url):
    try:
        resp = requests.get(url)
        # We will only extract the text from successful requests:
        if resp.status_code == 200:
            return beautifulsoup_extract_text_fallback(resp.content)
        else:
            # This line will handle for any failures in the BeautifulSoup4 function:
            return np.nan
    # Handling for any URLs that don't have the correct protocol
    except MissingSchema:
        return np.nan

Answer 2

除了我同意 Samwise 尝试坚持使用标准的、得到良好支持的 Python 模块之外，我认为这里有一个关于 版本管理 .

在您提供的教程中，他们只安装了最新版本的软件包。这通常不是好的做法。特别是在生产环境中，您希望能够控制版本，这样您就不会因为其他人更改了您的依赖项而最终破坏您的代码。

对于您的情况，trafilatura 版本 0.7.0 still supports the json_output keyword argument, but later versions have dropped this. For example, the latest version at time of writing: 0.9.3。

TypeError: XXXXX got an unexpected keyword argument 'XXXXXX'

TypeError: XXXXX got an unexpected keyword argument 'XXXXXX'

python

json

keyword-argument