title: Python: How to append to existing key of a dictionary?
body: <p>I have a dictionary with multidimensional lists, like so:</p>
  
  <pre><code>myDict = {'games':[ ['Post 1', 'Post 1 description'], ['Post2, 'desc2'] ], 'fiction':[ ['fic post1', 'p 1 fiction desc'], ['fic post2, 'p 2 fiction desc'] ]}
  </code></pre>
  
  <p>How would I add a new list with ['Post 3', 'post 3 description'] to the games key list?</p>