title: Python dictionary magic needed
body: <p>I have these two Python dictionaries with a location and a quantity associated.</p>
  <pre><code>A: {'Pompano Beach': ['13'], ' Miami': ['18'], ' W. Palm Beach': ['18']}
  B:  {'Atlanta': ['25'], 'Las Vegas': ['50+']}
  </code></pre>
  <p>I need to print them out in an html table. I am currently using flask with jinja2 templating.</p>
  <p>I would like to have my results as:</p>
  <pre><code>C: {'Pompano Beach': ['13', '0'], ' Miami': ['18', '0'], ' W. Palm Beach': ['18', '0'], 'Atlanta': ['0','25'], 'Las Vegas': ['0', '50+']}
  </code></pre>
  <p>Where the 0 index in each list value is that of A's quantity and the 1 index is that of B's quantity.
  Also, where if the city doesn't exist in B then add a 0. Same for if it does not exist in A then add a 0 in its corresponding index.</p>
  <p>I'm not sure if there's an easier solution but I have come to the point where I believe this is what I need in order to keep my styling with jinja2 templating.</p>