title: how to add resources to url in python google app engine
body: <p>I'm trying to make a blog/news site and would like to have articles have the url:
  <code>http://mysite.com/2012/02/05/slug/</code><br>
  My problem is appending the <code>/2012/02/05/slug/</code> to the url in python. I can save the date and slug into Gql database, as well as the article's content. I just don't how to add the date and slug resource into the url. Searching google hasn't really worked because I don't know what this technique is called...but know most new/blog sites implement it. Appreciate any help. Thanks in advance.</p>