python-3.x - 如果出现超过 1 次，如何将子标签移动到母标签之后？

Question

我正在尝试将每个子标签的所有子标签移到<div class="c-s">其母标签之前<div class="c-w">。例如，

from bs4 import BeautifulSoup

txt = '''
<div class="c-w">
  <div class="c-s">
    <div class="ex_example"> aa </div>
    <div class="ex_example"> aa </div>
  </div>
</div>

<div class="audio">link</div>

<div class="c-w">
  <div class="c-s">
    <div class="ex_example"> xx </div>
    <div class="ex_example"> yy </div>
  </div>
</div>
'''

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

我的预期输出是以下 BeautifulSoup 对象

<div class="ex_example"> aa </div>
<div class="ex_example"> aa </div>
<div class="ex_example"> cc </div>
<div class="c-w">
  <div class="c-s"></div>
</div>
<div class="ex_example"> xx </div>
<div class="ex_example"> yy </div>
<div class="ex_example"> zz </div>
<div class="c-w">
  <div class="c-s"></div>
</div>

这意味着此类的级别<div class="ex_example"> cc </div>与 相同<div class="c-w">。

非常感谢你的帮助！

标签： python-3.xbeautifulsoup

Answer 1

此脚本将class="ex_example"在 parent 前面移动所有标签<div class="c-w">：

from bs4 import BeautifulSoup

txt = '''
<div class="c-w">
  <div class="c-s">
    <div class="ex_example"> aa </div>
    <div class="ex_example"> aa </div>
    <div class="ex_example"> cc </div>
  </div>
</div>

<div class="audio">link</div>

<div class="c-w">
  <div class="c-s">
    <div class="ex_example"> xx </div>
    <div class="ex_example"> yy </div>
    <div class="ex_example"> zz </div>
  </div>
</div>
'''

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

for c_s in soup.select('div.c-s'):
    for c in list(c_s.contents):
        c.find_parent('div', class_='c-w').insert_before(c)

print(soup)

印刷：

<div class="ex_example"> aa </div>
<div class="ex_example"> aa </div>
<div class="ex_example"> cc </div>
<div class="c-w">
<div class="c-s"></div>
</div>
<div class="audio">link</div>

<div class="ex_example"> xx </div>
<div class="ex_example"> yy </div>
<div class="ex_example"> zz </div>
<div class="c-w">
<div class="c-s"></div>
</div>