title: Sort a list in reverse order
body: <p>I have a list a = ['L', 'N', 'D']. I want to reverse the order of elements in a and get b = ['D', 'N', 'L']. I tried this:</p>
  
  <pre><code>a = ['L', 'N', 'D']
  b = sorted(a, reverse=True)
  </code></pre>
  
  <p>But the output is</p>
  
  <pre><code>b= ['N', 'L', 'D']
  </code></pre>
  
  <p>Where do I make a mistake?</p>