title: how to pass class attribute and value to markdown syntax
body: <p>Im using python markdown for my django project, when i have the value</p>
  
  <pre><code>#/usr/bin/env python
  print "this is converted to html code block"
  </code></pre>
  
  <p>the output is</p>
  
  <pre><code>&lt;pre&gt;&lt;code&gt;    
  #/usr/bin/env python
  print "this is converted to html code block"
  &lt;/code&gt;&lt;pre&gt;
  </code></pre>
  
  <p>Now my question is that how can i pass class attribute and value to code elem.
  Sample:</p>
  
  <pre><code>#i should be using some markdown syntax below
  [class="python"]
  #/usr/bin/env python
  print "this is converted to html code block"
  </code></pre>
  
  <p>and then the output here</p>
  
  <pre><code>&lt;pre&gt;&lt;code class="python"&gt;    
  #/usr/bin/env python
  print "this is converted to html code block"
  &lt;/code&gt;&lt;pre&gt;
  </code></pre>
  
  <p>is that possible? and how?</p>