Beautiful Soup 使用正则表达式查找标签

Python

使用正则表达式查找标签是在Beautiful Soup中的一种强大的技巧。Beautiful Soup是一个Python库，用于从HTML或XML文件中提取数据。正则表达式是一种强大的文本匹配工具，可以识别和提取特定模式的文本。

Python
import re
from bs4 import BeautifulSoup
html = """
<html>
<head>
<title>Beautiful Soup</title>
</head>
<body>
Example
Google.com">Google</a>
Facebook.com">Facebook</a>
</body>
</html>
"""
soup = BeautifulSoup(html, "html.parser")
links = soup.find_all(re.compile("^a$"))
for link in links:
    print(link)

Example
Google.com">Google</a>
Facebook.com">Facebook</a>

标签和多个标签，我们只想提取出标签中的文本。

Python
import re
from bs4 import BeautifulSoup
html = """
<html>
<head>
<title>Beautiful Soup</title>
</head>
<body>
<img src="https://img.izhida.com/topic/3501bb093d363810b671059b9cfed3f8.jpg" alt="XML"><br>XML
This is a paragraph.
This is another paragraph.
<span>This is a span with some text.</span>
<span>This is another span with some text.</span>
</body>
</html>
"""
soup = BeautifulSoup(html, "html.parser")
spans = soup.find_all(re.compile("^span$"))
for span in spans:
    text = span.get_text()
    print(text)

This is a span with some text.
This is another span with some text.