Help parsing a page with python

[mierdatutis mi]

Hi,

I would like to parse a webpage to can get the url of the video download. I
use pyhton and firebug but I cant get the url link.

Example:

The url where I have to get the video link is:
http://www.rtve.es/mediateca/videos/20100125/saber-comer---salsa-verde-judiones-25-01-10/676590.shtml
"

The video is
http://www.rtve.es/resources/TE_SSAC011/flv/8/2/1264426362028.flv
Could you help me please?
Many thanks and sorry for my english!
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