title: pymongo - "dnspython" module must be installed to use mongodb+srv:// URIs
body: <p>I am trying to connect MongoDB from Atlas.</p>
  <p>My <strong>mongo uri</strong> is: <code>mongodb+srv://abc:123@something.something.com/admin?retryWrites=True</code></p>
  <p>My <strong>pymongo version</strong> is <code>3.6.1</code></p>
  <p>I have installed <code>dnspython</code> and done <code>import dns</code></p>
  <p>But i still get this error:</p>
  <blockquote>
  <p>dnspython module must be installed to use mongodb+srv:// URI</p>
  </blockquote>