擅长:python、mysql、java
<p>使用<code>ElementTree</code></p>
<p>演示:</strong></p>
<pre><code>import xml.etree.ElementTree
et = xml.etree.ElementTree.parse(filename)
root = et.getroot()
for i in root.findall("item"):
i.find("value").text = "NewNumber"
et.write(filename)
</code></pre>
<p><strong>输出:</strong></p>
<pre><code><items>
<item>
<key>a</key>
<value>NewNumber</value>
</item>
<item>
<key>b</key>
<value>NewNumber</value>
</item>
<item>
<key>c</key>
<value>NewNumber</value>
</item>
</items>
</code></pre>