title: Split Python list
body: <p>I got a list in Python:</p>
  <pre><code>['Some', 'text', ':', 'And', 'some', 'other', 'text']
  </code></pre>
  <p>I want a function that will split the list before the <code>:</code>, e.g:</p>
  <pre><code>['Some text :', 'And some other text'].
  </code></pre>
  <p>What's the best way to achieve this? Thanks for your time.</p>