python lxml 使用

>>> import lxml.html
>>> broken_html='<ul class=country><li>Area<li>Population</ul>'
>>> tree=lxml.html.fromstring(broken_html) #parse the HTML
>>> fixed_html=lxml.html.tostring(tree,pretty_print=True)
>>> print fixed_html
<ul class="country">
<li>Area</li>
<li>Population</li>
</ul>

>>> li=tree.cssselect('ul.country > li')[0]
>>> area=li.text_content()
>>> print area
Area
>>>