title: Best Practices for migrating python2 to python3 in django
body: <p>It will be more helpful if you answer the following questions as well.</p>
  <ol>
  <li>Dealing with <code>models.CharField</code>.
  <ul>
  <li>In python2, how the CharField value is stored in the database and how it is different from the value which is going to store in python3.</li>
  </ul>
  </li>
  </ol>