title: Copying a key/value from one dictionary into another
body: <p>I have a dict with main data (roughly) as such: <code>{'UID': 'A12B4', 'name': 'John', 'email': 'hi@example.com}</code></p>
  
  <p>and I have another dict like: <code>{'UID': 'A12B4', 'other_thing: 'cats'}</code></p>
  
  <p>I'm unclear how to "join" the two dicts to then put "other_thing" to the main dict.  What I need is: <code>{'UID': 'A12B4', 'name': 'John', 'email': 'hi@example.com, 'other_thing': 'cats'}</code></p>
  
  <p>I'm pretty new to comprehensions like this, but my gut says there has to be a straight forward way.  </p>