title: How to remove last the two digits in a column that is of integer type?
body: <p>How can I remove the last two digits of a DataFrame column of type int64? </p>
  
  <p>For example <code>df['DATE']</code> includes:</p>
  
  <pre><code>DATE
  20110708
  20110709
  20110710
  20110711
  20110712
  20110713
  20110714
  20110815
  20110816
  20110817
  </code></pre>
  
  <p>What I would like is:</p>
  
  <pre><code>DATE
  201107
  201107
  201107
  201107
  201107
  201107
  201107
  201108
  201108
  201108
  </code></pre>
  
  <p>What is the simplest way of achieving this?</p>