title: How to get all the max lenght of each column in a dataframe
body: <p>is there a way to obtain the max length for each column in a dataframe?. I know how to do it one by one with object/numeric type, but the problem comes out when there is so much columns which i have to and also de type of each column (object/int/float/date).</p>
  <p>Example:</p>
  <pre><code>     a   b    c 
    1 aad sdsd  ds
    2 sds  wewe 5
  </code></pre>
  <p>Max a= 3 ; b=4 ;c=2</p>