title: Swap the array in single line
body: <p>I know this is very silly question. But, I'm very eager to know how to swap the elements in a single line.</p>
  
  <p>Ex:</p>
  
  <pre><code>a, b = 1, 2</code></pre>
  
  <p>I need the answer like this</p>
  
  <pre><code>a, b = 2, 1</code></pre>