title: Appending to a list of lists sequentially
body: <p>I have two list of lists:</p>
  
  <pre><code>my_list = [[1,2,3,4], [5,6,7,8]]
  my_list2 = [['a', 'b', 'c'], ['d', 'e', 'f']]
  </code></pre>
  
  <p>I want my output to look like this:</p>
  
  <pre><code>my_list = [[1,2,3,4,'a','b','c'], [5,6,7,8,'d','e','f']]
  </code></pre>
  
  <p>I wrote the following code to do this but I end up getting more lists in my result.</p>
  
  <pre><code>my_list = map(list, (zip(my_list, my_list2)))
  </code></pre>
  
  <p>this produces the result as:</p>
  
  <pre><code>[[[1, 2, 3, 4], ['a', 'b', 'c']], [[5, 6, 7, 8], ['d', 'e', 'f']]]
  </code></pre>
  
  <p>Is there a way that I can remove the redundant lists.
  Thanks</p>