title: Python: what's the difference - abs and operator.abs
body: <p>In python what is the difference between :</p>
  
  <p><code>abs(a)</code> and <code>operator.abs(a)</code></p>
  
  <p>They are the very same and they work alike. If they are the very same then why are two separate functions doing the same stuff are made?? </p>
  
  <p>If there is some specific functionality for any one of it - please do explain it.</p>