title: How to add an element to a list?
body: <p>From this..</p>
  <pre><code>data = json.loads(urlopen('someurl').read())
  </code></pre>
  <p>...I will get:</p>
  <pre><code>{'list': [{'a':'1'}]}
  </code></pre>
  <p>I want to add <code>{'b':'2'}</code> into the <code>list</code>.</p>
  <p>Any idea how to do it?</p>