title: unpack based on variables names
body: <p>I'd like to unpack dicts like:</p>
  
  <pre><code>one, two, three, four = unpack(this_dict)
  </code></pre>
  
  <p>where </p>
  
  <pre><code>this_dict = {'one': 1, 'two': 2, 'three': 3, 'four': 4}
  </code></pre>
  
  <p>my only issue is <code>unpack</code> needs to know what names it was gonna be assigned to. How do you do this in python? Thank you</p>