title: How to pass a variable to urls.py
body: <p>I have a database 'artist' with one table : 'name', 'style'.
  Users can add any names for an artist. </p>
  
  <p>I would like to pass an argument to url in my template, like this : </p>
  
  <pre><code>&lt;a href="{% url 'webgui.views.music' artist.name %}" style="margin-bottom: 3px" type="button"
  </code></pre>
  
  <p>But is it possible to set dynamically the URL with the argument 'artist.name' (in urls.py) ? </p>
  
  <p>My urls.py actually : </p>
  
  <pre><code>url(r'^music/(\d+)/$', 'webgui.views.music'),
  </code></pre>
  
  <p>Maybe I need to change '\d+' by another regexp ?? </p>