使用Python在XML中进行XPath查询

Question

Is it possible to use XPath Query in Python while processing XML. I am using minidom which doesn't support that. Is there any other module for that?

Answer 1

http://docs.python.org/library/xml.etree.elementtree.html

etree supports XPath queries, just like lxml.

etree is included in the standard library, but lxml is faster.

Answer 2

My favorite XML processing library for Python is lxml which, because it is a wrapper around libxml2, also supports full XPath.

There is also 4Suite which is more of a pure Python solution.

Answer 3

ElementTree is included. Under 2.6 and below its xpath is pretty weak, but in 2.7 much improved :

import xml.etree.ElementTree as et
root = et.parse(filename)
result = ''

# How to make decisions based on attributes even in 2.6
for e in root.findall('.//child/grandchild'):
    if e.attrib.get('name') == 'foo':
        result = e.text
        break