BS4 replace_with 用于替换为新标签

Question

我需要在 html 文件中找到某些词并用链接替换它们。结果应该是该文件（由浏览器显示）允许您像往常一样点击链接。 Beautiful Soup 自动转义标签。我怎样才能避免这种行为？

最小示例

#!/usr/bin/env python3
from bs4 import BeautifulSoup
import re

html = \
'''
   Identify
'''
soup = BeautifulSoup(html,features="html.parser")
for txt in soup.findAll(text=True):
  if re.search('identi',txt,re.I) and txt.parent.name != 'a':
    newtext = re.sub('identify', '<a href="test.html"> test </a>', txt.lower())
    txt.replace_with(newtext)
print(soup)

结果：

&lt;a href="test.html"&gt; test &lt;/a&gt;

预期结果：

<a href="test.html"> test </a>

Answer 1

您可以将带有标记的新汤作为参数添加到 .replace_with()，例如：

import re
from bs4 import BeautifulSoup


html = '''
   Other Identify Other
'''
soup = BeautifulSoup(html,features="html.parser")
for txt in soup.findAll(text=True):
  if re.search('identi',txt,re.I) and txt.parent.name != 'a':
    new_txt = re.sub(r'identi[^\s]*', '<a href="test.html">test</a>', txt, flags=re.I)
    txt.replace_with(BeautifulSoup(new_txt, 'html.parser'))

print(soup)

打印：

   Other <a href="test.html">test</a> Other

Answer 2

您可以使用w3lib，它是replace_entities()函数来替换来自HTML个实体一个字符串。

安装：pip install w3lib

from bs4 import BeautifulSoup
import re
from w3lib.html import replace_entities
html = \
'''
   Identify
'''
soup = BeautifulSoup(html,features="html.parser")
for txt in soup.findAll(text=True):
  if re.search('identi',txt,re.I) and txt.parent.name != 'a':
    newtext = re.sub('identify', r'<a href="test.html"> test </a>', txt.lower())
    txt.replace_with(newtext)

print(replace_entities(str(soup))) #str(soup) as its BeautifulSoup type not str

#Output
>>> <a href="test.html"> test </a>

BS4 replace_with 用于替换为新标签

BS4 replace_with for replacing with new tag

python

beautifulsoup

replacewith