title: How to do a GQL query (using gcloud-python)
body: <p>I have a collection of Entities of one <strong>kind</strong>. I need to extract the <strong>distinct</strong> values of one property, named <strong>p</strong>, of these Entities. </p>
  
  <p>In GQL, I would do:</p>
  
  <p><code>SELECT DISTINCT p from kind</code></p>
  
  <p>However in the gcloud-python <a href="https://github.com/GoogleCloudPlatform/gcloud-python" rel="nofollow">library</a> GQL queries aren't implemented yet (see <a href="https://github.com/GoogleCloudPlatform/gcloud-python/issues/304" rel="nofollow">issue-304</a>).</p>
  
  <p>How should I do that with the tools currently available in gcloud-python ? I'm aware of a "group-by" workaround, yet the performances are terrible.</p>