python怎样使用正则表达式获得html标签数据

我想要获得<h2>多云</h2> 里面的多云，
<<div class="w-number"> <span class="tpte">14℃</span> </div>里面的14℃
请问我应该使用怎样的正则表达式？？谢谢

<div class="box-s1-l">

    <div class="col"> <span class="day_s">白天</span>

        <div class="w-icon"><img alt='多云' src='http://www.sinaimg.cn/dy/weather/images/yb2/45_45/duoyun_0.gif' /></div>

        <h2>[color=red]多云[/color]</h2>

        <div class="w-number"> <span class="tpte">[color=red]14℃[/color]</span> </div>

    </div>

    <div class="col"> <span class="day_s">夜间</span>

        <div class="w-icon"><img alt='多云' src='http://www.sinaimg.cn/dy/weather/images/yb2/45_45/duoyun_1.gif' /></div>

        <h2>多云</h2>

        <div class="w-number"> <span class="tpte">6℃</span> </div>

    </div>

</div>

#!/usr/bin/env python
#-*- coding: utf8 -*-
import re

html = """
    <div class="box-s1-l">
        <div class="col"> <span class="day_s">白天</span>
            <div class="w-icon"><img alt='多云' src='http://www.sinaimg.cn/dy/weather/images/yb2/45_45/duoyun_0.gif' /></div>
            <h2>多云</h2>
            <div class="w-number"> <span class="tpte">14℃</span> </div>
        </div>
        <div class="col"> <span class="day_s">夜间</span>
            <div class="w-icon"><img alt='多云' src='http://www.sinaimg.cn/dy/weather/images/yb2/45_45/duoyun_1.gif' /></div>
            <h2>多云</h2>
            <div class="w-number"> <span class="tpte">6℃</span> </div>
        </div>
    </div>
"""

if __name__ == '__main__':
    p = re.compile('<[^>]+>')
    print p.sub("", html)

 这个是去掉所有HTML标签。你可以把你需要提取数据的那行HTML用这个正则把非HTML标签的内容提取出来

例如：

取天气

#!/usr/bin/env python
#-*- coding: utf8 -*-
import re

html = """
    <h2>多云</h2>
"""

if __name__ == '__main__':
    p = re.compile('<[^>]+>')
    print p.sub("", html)

 取温度

#!/usr/bin/env python
#-*- coding: utf8 -*-
import re

html = """
    <div class="w-number"> <span class="tpte">14℃</span> </div>
"""

if __name__ == '__main__':
    p = re.compile('<[^>]+>')
    print p.sub("", html)