title: Remove duplicates from rows and columns (cell) in a dataframe, python
body: <p>I have two columns with a lot of duplicated items per cell in a dataframe. Something similar to this:</p>
  
  <pre><code>Index   x    y  
    1     1    ec, us, us, gbr, lst
    2     5    ec, us, us, us, us, ec, ec, ec, ec
    3     8    ec, us, us, gbr, lst, lst, lst, lst, gbr
    4     5    ec, ec, ec, us, us, ir, us, ec, ir, ec, ec
    5     7    chn, chn, chn, ec, ec, us, us, gbr, lst
  </code></pre>
  
  <p>I need to eliminate all the duplicate items an get a resulting dataframe like this:</p>
  
  <pre><code>Index   x    y  
    1     1    ec, us, gbr, lst
    2     5    ec, us
    3     8    ec, us, gbr,lst
    4     5    ec, us, ir
    5     7    chn, ec, us, gbr, lst
  </code></pre>
  
  <p>Thanks!! </p>