title: How to get averages for the values in a dict which match the keys and output that to another dict
body: <p>If I have two dicts using the same keys can I add the get an output dict which has averages of the keys of the input dicts?</p>
  <p><strong>Code</strong></p>
  <pre><code>a1_up = {&quot;190&quot;: 34.2 , &quot;200&quot;:44.4 , &quot;210&quot;: 41.7 }
  
  a1_down = {&quot;210&quot;: 38.3 , &quot;200&quot; : 45.6 , &quot;190&quot;: 35.8}
  </code></pre>
  <p><strong>Desired output</strong></p>
  <pre><code>out = {&quot;190&quot;: 35.0 , &quot;200&quot;:45.0 , &quot;210&quot;: 40.0}
  </code></pre>