title: Capturing URL parameters in request.GET
body: <p>I am currently defining regular expressions in order to capture parameters in a URL, as described in the tutorial. How do I access parameters from the URL as part the <code>HttpRequest</code> object?</p>
  <p>My <code>HttpRequest.GET</code> currently returns an empty <code>QueryDict</code> object.</p>
  <p>I'd like to learn how to do this without a library, so I can get to know Django better.</p>