title: Load a dict-like string which includes None value using python
body: <p>Assume there is a string like <code>'{&quot;a&quot;: None}'</code>. How to let Python know the existence of <code>None</code>?</p>
  <p>This is the error I have been receiving:</p>
  <pre><code>JSONDecodeError: Expecting value: line 1 column 7 (char 6)
  </code></pre>