title: Filter instances by state with boto3
body: <p>Trying to use boto3 to describe all of my instances and filter every instance that is not currently running.
  Using this post as a reference for building my filter - <a href="http://rob.salmond.ca/filtering-instances-by-name-with-boto3/" rel="noreferrer">http://rob.salmond.ca/filtering-instances-by-name-with-boto3/</a>.</p>
  
  <p>When I try to filter the instances by state using this filter - </p>
  
  <pre><code>filters = [{
  'Name': 'tag:State',
  'Values': ['running']
  }]
  </code></pre>
  
  <p>The query comes back empty (which makes sense, since the state value is nested inside a dictionary of it's own.</p>
  
  <p>My question is - how do I access a nested tag with the filters parameter?</p>