使用BeautifulSoup在Python中使用存储在CSV文件中的锚文本和URL向HTML添加超链接

vlju58qv 于 2022-12-09 发布在 Python

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我想用python beautiful soup编写一个程序，使用带有anchor_text和hyperlink的csv文件来链接html中的单词
包含2列的CSV文件：
| 锚文本|超连结|
| - -| - -|
| 谷歌|https://www.google.com|
| 必应|https://bing.com|
| 雅虎|https://yahoo.com|
| 有效市场活动|https://activecampaign.com|
以下是HTML示例

<!-- wp:paragraph -->
<p>This is a existing link <a class="test" href="https://yahoo.com/">Yahoo</a> Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another Google Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another lowercase bing Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another multi word Active Campaign Text</p>
<!-- /wp:paragraph -->

我希望输出为

<!-- wp:paragraph -->
<p>This is a existing link <a href="https://yahoo.com/">Yahoo</a> Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another <a href="https://www.google.com/">Google</a> Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another lowercase <a href="https://bing.com/">bing</a> Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another multi word <a href="https://activecampaign.com/">Active Campaign</a> Text</p>
<!-- /wp:paragraph -->

这是我目前为止无法使用的代码，它删除了整个句子，并用一个超链接替换。

html_doc = """
<!-- wp:paragraph -->
<p>This is a existing link <a class="test" href="https://yahoo.com/">Yahoo</a> Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another Google Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another lowercase bing Text</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>This is another multi word Active Campaign Text</p>
<!-- /wp:paragraph -->
"""

soup = BeautifulSoup(html_doc, 'html.parser')

# read the CSV file with anchor text and hyperlinks
with open('file.csv', 'r') as csv_file:
  reader = csv.reader(csv_file)
  hyperlinks = dict(reader)

# find all the text nodes in the HTML document
text_nodes = soup.find_all(text=True)

# iterate over the text nodes and replace the anchor text with hyperlinked text
for node in text_nodes:
  for anchor_text, hyperlink in hyperlinks.items():
    if anchor_text in node:
      # create a new tag with the hyperlink
      new_tag = soup.new_tag('a', href=hyperlink)
      new_tag.string = anchor_text
      # replace the original text node with the new one
      node.replace_with(new_tag)

# save the modified HTML to a new file
with open('index_hyperlinked.html', 'w') as outfile:
  outfile.write(str(soup))

print(soup)

Html

来源：https://stackoverflow.com/questions/74699446/add-hyperlinks-to-html-using-beautifulsoup-in-python-using-anchor-text-and-url-s

1条答案

按热度按时间

lh80um4z1#

我没有指定任何解析器--只是直接soup = BeautifulSoup(html_doc);应该没什么区别，但我想我应该提一下以防万一。
你应该尝试在外部循环中使用anchor/links，然后在内部循环中分解匹配的字符串：

# from bs4 import element as bs4_element
be_navStr = bs4_element.NavigableString

hList = [
    (anchor_text.strip(), hyperlink.strip()) 
    anchor_text, hyperlink in hyperlinks.items()
    if anchor_text.strip() and hyperlink.strip() # no blanks
]

print('#'*35, 'OLD', '#'*35, '\n')
print(soup, '\n')
print('#'*75, '\n\n\n')

for txt, link in hList:
    navStrs = [
        d for d in soup.descendants if type(d) == be_navStr 
        and f' {txt.lower()} ' in f' {d.get_text().strip().lower()} '
    ]
    for ns in navStrs: 
        tLen, remStr = len(txt), f' {ns.get_text().strip()} '
        if remStr[1:-1].lower() == txt.lower():
            # to skip if it's already a hyperlink
            if ns.parent.name == 'a': 
                # ns.parent['href'] = link # if you want to replace/update link
                continue 

        while f' {txt.lower()} ' in remStr.lower():
            sInd = remStr.lower().find(f' {txt.lower()} ') + 1

            hlTag = soup.new_tag('a', href=link)
            hlTag.append(remStr[sInd:sInd + tLen])

            newCont = [remStr[:sInd].lstrip(), hlTag, ' ']
            for addn in newCont: ns.insert_before(addn) 

            remStr = f' {remStr[sInd + tLen:].strip()} '
        ns.replace_with(remStr.strip())

print('#'*35, 'NEW', '#'*35, '\n')
print(soup, '\n')
print('#'*75)

打印输出：

################################### OLD ################################### 

<!-- wp:paragraph -->
<p>This is a existing link <a class="test" href="https://yahoo.com/">Yahoo</a> Text</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>This is another Google Text</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>This is another lowercase bing Text</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>This is another multi word Active Campaign Text</p>
<!-- /wp:paragraph --> 

########################################################################### 


################################### NEW ################################### 

<!-- wp:paragraph -->
<p>This is a existing link <a class="test" href="https://yahoo.com/">Yahoo</a> Text</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>This is another <a href="https://www.google.com">Google</a> Text</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>This is another lowercase <a href="https://bing.com">bing</a> Text</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>This is another multi word <a href="https://activecampaign.com">Active Campaign</a> Text</p>
<!-- /wp:paragraph --> 

###########################################################################

即使在同一个字符串中有多个匹配项，只要它们不重叠（如 "Google Chrome" 和 "Chrome Beta"），也可以使用此方法。

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使用BeautifulSoup在Python中使用存储在CSV文件中的锚文本和URL向HTML添加超链接

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