title: Split elements by \n inside a list
body: <p>I have this list:</p>
  <pre><code>test_results = ['Test1\nTest2', 'Grade A\nGrade B']
  </code></pre>
  <p>I want to split the elements by the '\n' and save them in another list, like this:</p>
  <pre><code>test_results = [['Test 1, Grade A'], ['Test B', 'Grade B']]
  </code></pre>
  <p>I am struggling to find a way to do it... can you help me?</p>