Python BeautifulSoup：使用 find 和 find_all 查找元素

#Python BeautifulSoup#

1、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。

2、示例

2.1、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>

2.2、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>

2.3、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>

( 本文完 )