擅长:python、mysql、java
<pre><code>import lxml.etree as ET
content='''
<Car xmlns="http://example.com/vocab/xml/cars#">
<brandName type="http://example.com/codes/bmw#" abbrev="BMW" value="BMW" >BMW</brandName>
<maxspeed>
<value>250</value>
<unit type="http://example.com/codes/units#" value="miles per hour" abbrev="mph" />
</maxspeed>
</Car>
'''
doc=ET.fromstring(content)
NS = 'http://example.com/vocab/xml/cars#'
# print(ET.tostring(doc,pretty_print=True))
for x in doc.xpath('//ns:maxspeed/ns:unit/@abbrev',namespaces={'ns': NS}):
print(x)
</code></pre>
<p>收益率</p>
^{pr2}$