让BeautifulSoup以不区分大小写的方式捕获标记

你可以用 soup.findAll

import BeautifulSoup

html = '''<html>
<head>
<meta name="description" content="Free Web tutorials on HTML, CSS, XML" /> 
<META name="keywords" content="HTML, CSS, XML" /> 
<title>Test</title>
</head>
<body>
</body>
</html>'''

soup = BeautifulSoup.BeautifulSoup(html)
for x in soup.findAll('meta'):
    print x

结果:

<meta name="description" content="Free Web tutorials on HTML, CSS, XML" />
<meta name="keywords" content="HTML, CSS, XML" />

BeautifulSoup标准化了输入的解析树。它将标记转换为小写。你没什么好担心的。