title: round down to 2 decimal in python
body: <p>I need to round down and it should be two decimal places.<br>
  Tried the following, </p>
  
  <pre><code>a = 28.266
  print round(a, 2)
  </code></pre>
  
  <blockquote>
    <p>28.27</p>
  </blockquote>
  
  <p>But the expected value is 28.26 only.</p>