Python BeautifulSoup：查找元素

简介

• find 是查找并返回符合条件的第1个元素。
• find_all 是查找并返回所有符合条件的元素。
• select_one 是查找并返回符合条件的第1个元素。
• select 是查找并返回所有符合条件的元素。

find、find_all 示例

示例：使用 name 指定标签名

代码：

from bs4 import BeautifulSoup

html_content = '''
<div>测试01</div>
<div>测试02</div>
<h1>测试H1</h1>
'''
soup = BeautifulSoup(html_content, 'html.parser')

print('--------- find_all ---------')
for ele in soup.find_all(name='div'):
    print(ele)
print('--------- find ---------')
print(soup.find(name='div'))

执行结果：

--------- find_all ---------
<div>测试01</div>
<div>测试02</div>
--------- find ---------
<div>测试01</div>

示例：直接指定标签名

代码：

from bs4 import BeautifulSoup

html_content = '''
<div>测试01</div>
<div>测试02</div>
<h1>测试H1</h1>
'''
soup = BeautifulSoup(html_content, 'html.parser')

print('--------- find_all ---------')
for ele in soup.find_all('div'):
    print(ele)
print('--------- find ---------')
print(soup.find('div'))

执行结果：

--------- find_all ---------
<div>测试01</div>
<div>测试02</div>
--------- find ---------
<div>测试01</div>

示例：指定多个标签

代码：

from bs4 import BeautifulSoup

html_content = '''
<div>测试01</div>
<div>测试02</div>
<h1>测试H1</h1>
'''
soup = BeautifulSoup(html_content, 'html.parser')

print('--------- find_all ---------')
for ele in soup.find_all(['h1', 'h2', 'div']):
    print(ele)
print('--------- find ---------')
print(soup.find(['h1', 'h2', 'div']))

执行结果：

--------- find_all ---------
<div>测试01</div>
<div>测试02</div>
<h1>测试H1</h1>
--------- find ---------
<div>测试01</div>

select、select_one 示例

代码：

from bs4 import BeautifulSoup

html_content = '''
<div>测试01</div>
<div>测试02</div>
'''
soup = BeautifulSoup(html_content, 'html.parser')

print('--------- select ---------')
for ele in soup.select('div'):
    print(ele)
print('--------- select_one ---------')
print(soup.select_one('div'))

执行结果：

--------- select ---------
<div>测试01</div>
<div>测试02</div>
--------- select_one ---------
<div>测试01</div>