title: How to merge two Pandas columns that are not identical into 1 column
body: <p>I want to be able to combine two specific columns from a dataframe that aren't identical into a new column.</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>Name</th>
  <th>Team or Club</th>
  <th>After School Activity</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>Jill</td>
  <td>Yes</td>
  <td>Drama</td>
  </tr>
  <tr>
  <td>Alex</td>
  <td>Yes</td>
  <td>Soccer</td>
  </tr>
  <tr>
  <td>John</td>
  <td>No</td>
  <td>Tutor</td>
  </tr>
  <tr>
  <td>Nick</td>
  <td></td>
  <td></td>
  </tr>
  <tr>
  <td>Sean</td>
  <td>Yes</td>
  <td>Basketball</td>
  </tr>
  <tr>
  <td>Lisa</td>
  <td>No</td>
  <td></td>
  </tr>
  <tr>
  <td>Steph</td>
  <td></td>
  <td>Dance</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>In this case I would like to combine columns 'Team or Club' and ' After School Activity' into a new column.</p>
  <p>The new column should look like this.</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>Combined</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>Yes, Drama</td>
  </tr>
  <tr>
  <td>Yes, Soccer</td>
  </tr>
  <tr>
  <td>No, Tutor</td>
  </tr>
  <tr>
  <td></td>
  </tr>
  <tr>
  <td>Yes, Basketball</td>
  </tr>
  <tr>
  <td>No</td>
  </tr>
  <tr>
  <td>Dance</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>Sorry that this isn't in the right formatting and I put a table instead of showing my code or output. I'm new to this, I'm not sure how to do that yet.</p>