title: Table of dictionaries
body: <p>I have a table of dicts looking like:</p>
  <pre><code>[{
      'variant_id': 4126274, 
      'stock': [
          {'stock_id': 6, 'quantity': 86}, 
          {'stock_id': 4, 'quantity': 23}, 
          {'stock_id': 3, 'quantity': 9}
      ]
  }, ...]
  </code></pre>
  <p>My goal is to unzip every piece of stock to look like this:</p>
  <pre><code>[{'variant_id': 4126274, 'stock_id': 6, 'quantity':86}
  {'variant_id': 4126274, 'stock_id': 4, 'quantity':23}
  {'variant_id': 4126274, 'stock_id': 3, 'quantity':9}...]
  </code></pre>
  <p>Is there any fast and optimal way to do this?</p>