[蟒蛇菜谱]Python获取任意xml节点的值

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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