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python - 如何将 str 转换为漂亮的汤标签

问题描述

我有两个看起来像这样的html：

<h3>
First heading 
</h3>
<ol>
<li>
hi
</li>
</ol>
<h3>
Second 
</h3>
<ol>
<li>
second
</li>
</ol>

文件 2

<h3>
First heading 
</h3>
<ol>
<li>
hello
</li>
</ol>
<h3>
Second 
</h3>
<ol>
<li>
second to second
</li>
</ol>

我需要将第二个文档中的 li 附加到相关 h3 下第一个文档的 html 中。这是我的代码

soup = BeautifulSoup(html_string)
h3_tags = soup.find_all('h3')
ol_tags = [each_h3.find_next('ol') for each_h3 in h3_tags]


soup = BeautifulSoup(html_string_new)
h3_tags_new = soup.find_all('h3')
ol_tags_new = [each_h3.find_next('ol') for each_h3 in h3_tags_new]

countries_old = []
countries_new = []
html_new = ""
for i in h3_tags:
    countries_old.append(i.text)
for i in h3_tags_new:
    countries_new.append(i.text)

for country in countries_new:
    idx = countries_old.index(country)
    tag = str(ol_tags[idx])

    tag = tag[:-5]
    tag = tag[4:]
    idx_new = countries_new.index(country)
    tag_new = str(ol_tags_new[idx_new])

    tag_new = tag_new[:-5]
    tag_new = tag_new[4:]
    tag = "<ol>" + tag + tag_new + "</ol>"
    ol_tags[idx] = tag

    html_new += h3_tags[idx]
    html_new += tag


with open("check.html", "w", encoding="utf8") as html_file:
    html_file.write(html_new)
    html_file.close()

import pypandoc
output = pypandoc.convert(source='check.html', format='html', to='docx', outputfile='test.docx', extra_args=["-M2GB", "+RTS", "-K64m", "-RTS"])

此代码从第二个文档中获取 h3 检查其索引，并从同一索引中获取第二个文档的 ol 值。然后它从这些标签中删除 ol 标签并将这两个标签连接在一起。它不断将这些存储在 html_file 中。但是当我将 ol 与 h3 连接时，它会出现此错误：

TypeError: can only concatenate str (not "Tag") to str

编辑：预期输出：

<h3>
First heading 
</h3>
<ol>
<li>
hello
</li>
<li>
hi
</li>
</ol>
<h3>
Second 
</h3>
<ol>
<li>
second to second
</li>
<li>
second
</li>
</ol>

标签： pythonhtmlbeautifulsoup

解决方案

尝试：

from bs4 import BeautifulSoup

html1 = """
<h3>
First heading 
</h3>
<ol>
<li>
hi
</li>
</ol>
<h3>
Second 
</h3>
<ol>
<li>
second
</li>
</ol>
"""

html2 = """
<h3>
First heading 
</h3>
<ol>
<li>
hello
</li>
</ol>
<h3>
Second 
</h3>
<ol>
<li>
second to second
</li>
</ol>
"""

soup1 = BeautifulSoup(html1, "html.parser")
soup2 = BeautifulSoup(html2, "html.parser")

for li in soup2.select("h3 + ol > li"):
    h3_text = li.find_previous("h3").get_text(strip=True)
    h3_soup1 = soup1.find("h3", text=lambda t: h3_text in t)
    if not h3_soup1:
        continue
    h3_soup1.find_next("ol").insert(0, li)

print(soup1.prettify())

印刷：

<h3>
 First heading
</h3>
<ol>
 <li>
  hello
 </li>
 <li>
  hi
 </li>
</ol>
<h3>
 Second
</h3>
<ol>
 <li>
  second to second
 </li>
 <li>
  second
 </li>
</ol>

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