python xml.etree.ElementTree遍历xml所有节点实例详解

python xml.etree.ElementTree遍历xml所有节点

XML文件内容：

    <students> 
      <student name='刘备' sex='男' age='35'/> 
      <student name='吕布' sex='男' age='38'/> 
      <student name='貂蝉' sex='女' age='22'/> 
    </students> 

代码：

    #-*- coding: UTF-8 -*-  
    # 从文件中读取数据 
    import xml.etree.ElementTree as ET 

    #全局唯一标识 
    unique_id = 1 

    #遍历所有的节点 
    def walkData(root_node, level, result_list): 
      global unique_id 
      temp_list =[unique_id, level, root_node.tag, root_node.attrib] 
      result_list.append(temp_list) 
      unique_id += 1 

      #遍历每个子节点 
      children_node = root_node.getchildren() 
      if len(children_node) == 0: 
        return 
      for child in children_node: 
        walkData(child, level + 1, result_list) 
      return 

    #获得原始数据 
    #out: 
    #[ 
    #  #ID, Level, Attr Map 
    #  [1, 1, {'ID':1, 'Name':'test1'}], 
    #  [2, 1, {'ID':1, 'Name':'test2'}], 
    #] 
    def getXmlData(file_name): 
      level = 1 #节点的深度从1开始 
      result_list = [] 
      root = ET.parse(file_name).getroot() 
      walkData(root, level, result_list) 

      return result_list 

    if __name__ == '__main__': 
      file_name = 'test.xml' 
      R = getXmlData(file_name) 
      for x in R: 
        print x 
      pass 

输出结果：

    [1, 1, 'students', {}] 
    [2, 2, 'student', {'age': '35', 'name': u'\u5218\u5907', 'sex': u'\u7537'}] 
    [3, 2, 'student', {'age': '38', 'name': u'\u5415\u5e03', 'sex': u'\u7537'}] 
    [4, 2, 'student', {'age': '22', 'name': u'\u8c82\u8749', 'sex': u'\u5973'}] 

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