title: How to change values in dataframe replace floating point numbers with integers
body: <p>lets say i have a dataframe </p>
  
  <pre><code>A   B     C 
  I   8.0   9.0
  II  7.0   4.0
  X   2.0   3.0
  </code></pre>
  
  <p>how do i change it to </p>
  
  <pre><code>A   B    C 
  I   8    9
  II  7    4
  X   2    3
  </code></pre>