from xml.dom.minidom import parse

DOMTree = xml.dom.minidom.parse(data_path)

data = DOMTree.documentElement

nodelist = data.getElementsByTagName(大类名称)

childlist = nodelist[0].childNodes

node.getAttribute(AttributeName)

node.getElementsByTagName(TagName)

node.childNodes

node.childNodes[index].nodeValue

node.firstChild ,等价于pagexml.childNodes[0]

Node.attributes["id"] 
a.name #就是上面的 "id" 
a.value #属性的值

#方法调用
text = get_data_vaule('account','type','createText','text')
print text
#结果
test data

<"1.0" encoding="UTF-8"?>
<data>
  <account type='createText'>
    <text>test data</text>
  </account>
  <account type='email'>
    <username>11111@qq.com</username>
    <password>11111111</password>
  </account>
</data>

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import unittest
import os
import time
from xml.dom.minidom import parse
import xml.dom.minidom
#获取xml文件地址
path = os.path.abspath('.') 
data_path = os.path.join(path,'features/data/data.xml') #获取xml文件地址
DOMTree = xml.dom.minidom.parse(data_path) 
data = DOMTree.documentElement
def get_attrvalue(node, attrname):
   return node.getAttribute(attrname)
# style = xml中的大类 ; typename = 细分属性; typevalue = 细分属性的值; valuename = xml文件，需要获取的值的tag;
def get_data_vaule(style, typename, typevalue, valuename):
  nodelist = data.getElementsByTagName(style)
  for node in nodelist: 
    if typevalue == node.getAttribute(typename):
      node_name = node.getElementsByTagName(valuename)
      value = node_name[0].childNodes[0].nodeValue
      print value
      return value
  return