Python 解析XML文件

python文件：

#parsexml.py
#本例子参考自python联机文档，做了适当改动和添加

import xml.parsers.expat

#控制打印缩进
level = 0

#获取某节点名称及属性值集合
def start_element(name, attrs):
global level
print ' '*level, 'start element:', name, attrs
level = level + 1

#获取某节点结束名称
def end_element(name):
global level
level = level - 1
print ' '*level, 'end element:', name

#获取某节点中间的值
def char_data(data):
if(data == '\n'):
return
if(data.isspace()):
return
global level
print ' '*level, 'character data:', data

p = xml.parsers.expat.parsercreate()

p.startelementhandler = start_element
p.endelementhandler = end_element
p.characterdatahandler = char_data
p.returns_unicode = false

f = file('sample.xml')
p.parsefile(f)
f.close()

xml文件（sample.xml）：

<contacts id="bluecrystal">
<item name="keen" fff="ddd">
<telephone type="phone">222222222</telephone>
<telephone type="mobile">134567890</telephone>
</item>
<item name="bcm">
<telephone type="phone">11111111</telephone>
<telephone type="mobile">15909878909</telephone>
</item>
</contacts>