python小例子之3 -- 解析xml文本

        主题： 解析xml文本
        环境： winxp pro + sp2 + python2.5
        备注： 请注意，凡是在源代码文件中使用了中文字符，请最好保存为utf-8格式
                     测试用例sample.xml也请用utf-8格式保存
        代码：
       

python 代码

# 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()

        测试用例：

xml 代码：sample.xml

xml version="1.0"?>
<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>

       
        测试结果：

Start element: contacts {'id': 'bluecrystal'}
  Start element: item {'fff': 'ddd', 'name': 'keen'}
    Start element: telephone {'type': 'phone'}
      Character data: 222222222
    End element: telephone
    Start element: telephone {'type': 'mobile'}
      Character data: 134567890
    End element: telephone
  End element: item
  Start element: item {'name': 'bcm'}
    Start element: telephone {'type': 'phone'}
      Character data: 11111111
    End element: telephone
    Start element: telephone {'type': 'mobile'}
      Character data: 15909878909
    End element: telephone
  End element: item
End element: contacts