Python-如何在多个标记之间提取元素
工作HTML:Python-如何在多个标记之间提取元素,python,html,python-3.x,beautifulsoup,extract,Python,Html,Python 3.x,Beautifulsoup,Extract,工作HTML: <h2> Heading 1 </h2> <h3> Subheading 1.1 </h3> <a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a> <h3> Subheading 1.2 </h3> <a href="#">Link
<h2> Heading 1 </h2>
<h3> Subheading 1.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a>
<h3> Subheading 1.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a> | <a href="#">Link 4</a>
<h3> Subheading 1.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 2 </h2>
<h3> Subheading 2.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2</a>
<h3> Subheading 2.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a>
<h3> Subheading 2.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 3 </h2>
soup = BeautifulSoup("""<h2> Heading 1 </h2>
<h3> Subheading 1.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a>
<h3> Subheading 1.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a> | <a href="#">Link 4</a>
<h3> Subheading 1.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 2 </h2>
<h3> Subheading 2.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2</a>
<h3> Subheading 2.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a>
<h3> Subheading 2.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 3 </h2>""", 'html5lib')
for row in soup.find_all("h2"):
print(row.text)
print(row.find_next('h3'))
print('################')
################
Heading 1
<h3> Subheading 1.1 </h3>
################
Heading 2
<h3> Subheading 2.1 </h3>
################
Heading 3
None
################
################
Heading 1
Subheading 1.1
Link 1
Link 2
Link 3
--------
Subheading 1.2
Link 1
Link 2
Link 3
Link 4
--------
Subheading 1.3
Link 1
################
Heading 2
Subheading 2.1
Link 1
Link 2
--------
Subheading 2.2
Link 1
Link 2
--------
Subheading 2.3
Link 1
################
当前结果:
<h2> Heading 1 </h2>
<h3> Subheading 1.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a>
<h3> Subheading 1.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a> | <a href="#">Link 4</a>
<h3> Subheading 1.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 2 </h2>
<h3> Subheading 2.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2</a>
<h3> Subheading 2.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a>
<h3> Subheading 2.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 3 </h2>
soup = BeautifulSoup("""<h2> Heading 1 </h2>
<h3> Subheading 1.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a>
<h3> Subheading 1.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a> | <a href="#">Link 4</a>
<h3> Subheading 1.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 2 </h2>
<h3> Subheading 2.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2</a>
<h3> Subheading 2.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a>
<h3> Subheading 2.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 3 </h2>""", 'html5lib')
for row in soup.find_all("h2"):
print(row.text)
print(row.find_next('h3'))
print('################')
################
Heading 1
<h3> Subheading 1.1 </h3>
################
Heading 2
<h3> Subheading 2.1 </h3>
################
Heading 3
None
################
################
Heading 1
Subheading 1.1
Link 1
Link 2
Link 3
--------
Subheading 1.2
Link 1
Link 2
Link 3
Link 4
--------
Subheading 1.3
Link 1
################
Heading 2
Subheading 2.1
Link 1
Link 2
--------
Subheading 2.2
Link 1
Link 2
--------
Subheading 2.3
Link 1
################
或者类似的东西这很管用
s = """
<h2> Heading 1 </h2>
<h3> Subheading 1.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a>
<h3> Subheading 1.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a> | <a href="#">Link 3</a> | <a href="#">Link 4</a>
<h3> Subheading 1.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 2 </h2>
<h3> Subheading 2.1 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2</a>
<h3> Subheading 2.2 </h3>
<a href="#">Link 1</a> | <a href="#">Link 2 </a>
<h3> Subheading 2.3 </h3>
<a href="#">Link 1</a>
<h2> Heading 3 </h2>
"""
from bs4 import BeautifulSoup as bs
soup = bs(s)
for i in soup.find_all('h2'):
print i.text
for j in i.next_siblings:
if j.name == 'h2': break
if j.name == 'h3':
print '\t'+j.text
for k in j.next_siblings:
if k.name == 'h3': break
if k.name == 'a':
print '\t\t'+k.text
s=”“”
标题1
第1.1子目
| |
第1.2子目
| | |
第1.3子目
标题2
第2.1子目
|
第2.2子目
|
第2.3子目
标题3
"""
从bs4导入BeautifulSoup作为bs
汤=bs(s)
因为我在汤里。找到所有的('h2'):
打印i.text
对于i.next_兄弟姐妹中的j:
如果j.name='h2':中断
如果j.name='h3':
打印'\t'+j.text
对于k in j.next_兄弟姐妹:
如果k.name='h3':中断
如果k.name='a':
打印'\t\t'+k.text