擅长：python、mysql、java
<p>可以使用根节点的getchildren（）或iterdescendants（）方法获取ElementTree节点的子节点：</p>
<pre><code>>>> from lxml import etree
>>> from cStringIO import StringIO
>>> t = etree.parse(StringIO("""<body>
... <h1>A title</h1>
... <p>Some text</p>
... </body>"""))
>>> root = t.getroot()
>>> for child in root.iterdescendants(),:
... print etree.tostring(child)
...
<h1>A title</h1>
<p>Some text</p>
</code></pre>
<p>这可能会出现以下情况：</p>
<pre><code>print ''.join([etree.tostring(child) for child in root.iterdescendants()])
</code></pre>
