Is it possible access other webpages from within another page
There are two general approaches:

Modify your Python code so that it runs as a CGI (or WSGI or whatever) module and generate the page of interest by running some server side code.
Use Javascript with jQuery to load the content of interest by running some client side code.

The difference between these two approaches is where the third party server sees the requests coming from. In the first case, it's from your web server. In the second case, it's from the browser of the user accessing your page.
Some browsers may not handle loading content from third party servers very gracefully (that is, they might pop up warning boxes or something).
Basically, what I'm trying to do is simply make a small script that accesses finds the most recent post in a forum and pulls some text or an image out of it.  I have this working in python, using the htmllib module and some regex.  But, the script still isn't very convenient as is, it would be much nicer if I could somehow put it into an HTML document.  It appears that simply embedding Python scripts is not possible, so I'm looking to see if theres a similar feature like python's htmllib that can be used to access some other webpage and extract some information from it.  
(Essentially, if I could get this script going in the form of an html document, I could just open one html document, rather than navigate to several different pages to get the information I want to check)
I'm pretty sure that javascript doesn't have the functionality I need, but I was wondering about other languages such as jQuery, or even something like AJAX?