title: Extract dict value from list of dict?
body: <p>I have this parameter</p>
  
  <pre><code>x = [{'id': 1L}, {'id': 4L}]
  </code></pre>
  
  <p>My list contains dicts that <strong>contain long integers</strong>, so there is a need to convert them to integers.</p>
  
  <p>I want to save only values of id in a new list like</p>
  
  <pre><code>y = [1, 4]
  </code></pre>
  
  <p>Do you know how to do this?</p>