title: mypy gives an error while importing submodule : Module has no attribute
body: <p>When I am checking my modules through mypy it gives me this error: </p>
  
  <blockquote>
    <p>Module 'django.contrib.gis' has no attribute 'forms'</p>
  </blockquote>
  
  <p>and I am importing forms like this:</p>
  
  <pre><code>from django.contrib.gis import forms
  </code></pre>
  
  <p>I know it is correct but mypy shows this error message.</p>
  
  <p>I could import like this:
  <code>from django.contrib import gis</code> and use <code>forms</code> as <code>gis.forms</code> but I do not want to.</p>
  
  <p>Can anyone help me to fix this? Thanks.</p>