title: what does '**+' operator behave in python?
body: <p>I am a newbie for python and trying to understand the below piece.</p>
  
  <pre><code>[i**+1 for i in range(3)]
  </code></pre>
  
  <p>I know that <code>i += 1</code> means <code>i = i + 1</code> but what does <code>**+</code> mean?
  I know <code>**</code> means exponent but the output of the above list comprehension puzzling me.</p>