title: Combine two numeric dataframe columns into one column of tuple
body: <p>I would like to create a new column that will put together 2 columns together. I looked over the internet but found nothing. How could I do:</p>
  
  <p>Ex: </p>
  
  <pre><code>A B
  50.631456 5.57871    
  
  C
  (50.631456, 5.57871)
  </code></pre>