本文实例讲述了Python获取任意xml节点值的方法。分享给大家供大家参考。具体实现方法如下：
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# -*- coding: utf-8 -*-
import xml.dom.minidom
ELEMENT_NODE = xml.dom.Node.ELEMENT_NODE
class SimpleXmlGetter(object):
def __init__(self, data):
if type(data) == str:
self.root = xml.dom.minidom.parse(data)
else:
self.root = data
def __getattr__(self, name): #support . operation
if name == 'data':
return self.root.firstChild.data
for c in self.root.childNodes:
if c.nodeType == ELEMENT_NODE and c.tagName == name:
return SimpleXmlGetter(c)
def __getitem__(self, index): #support [] operation
eNodes = [ e for e in self.root.parentNode.childNodes
if e.nodeType == ELEMENT_NODE and e.tagName == self.root.tagName]
return SimpleXmlGetter(eNodes[index])
def __call__(self, *args, **kwargs): #support () openration, for query conditions
for e in self.root.parentNode.childNodes:
if e.nodeType == ELEMENT_NODE:
for key in kwargs.keys():
if e.getAttribute(key) != kwargs[key]:
break
else:
return SimpleXmlGetter(e)
if __name__ == "__main__":
x = SimpleXmlGetter("sysd.xml")
print x.sysd.sysagent.param[2].data
print x.sysd.sysagent.param(name="querytimeout", type="second").data
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希望本文所述对大家的Python程序设计有所帮助。