title: python: how to change the name of a key in a dictionary
body: <p>My dict is a dict of <code>{str: {str: list of str}}</code><br>
  ex:   </p>
  
  <pre><code>{'hii':{'bye': [1, 2]}}  
  </code></pre>
  
  <p>what i want:  </p>
  
  <pre><code>{'hi':{'bye': [1, 2]}}  
  </code></pre>
  
  <p>Is there a way to change the <code>'hii'</code> to just <code>'hi'</code>?</p>
  
  <p>what I've tried only edits the values and not the keys.</p>