擅长:python、mysql、java
<p>我不确定这在<code>xml.etree</code>中是否可行,但下面是如何在<code>lxml.etree</code>中实现的:</p>
<pre><code>>>> from lxml import etree
>>> tree = etree.parse('example.xml')
>>> tree.xpath('namespace-uri(.)')
'http://maven.apache.org/POM/4.0.0'
</code></pre>