any suggestions for URL cataloging project?

[Matthew K Jensen]

I've just come up with an idea to make a small-time record of web
pages linking to other web pages. I don't want to download every page
on the internet (I'll leave google to do that). I just want to know if
anyone has any suggestions on how to acquire just the links from a web
page using python. This is for a cataloging purpose. Is there some
library or script out there that I haven't heard of?