title: Connect to MongoDB atlas cluster with mongoengine
body: <p>I have a flask application for which I used mongoengine to create the database. But now, I need to connect with MongoDB Atlas' Cluster, but I only could find how to do it with Pymongo:</p>
  <pre><code>client = pymongo.MongoClient(&quot;mongodb+srv://&lt;username&gt;:&lt;password&gt;@&lt;database-name&gt;.mongodb.net/test?retryWrites=true&amp;w=majority&quot;)
  db = client.test
  </code></pre>
  <p>I just want some help to connect with this new database.</p>