title: NameError: Name view_post is not defined
body: <h1>update</h1>
  <p>I apologise for yet another simple Django question but I cannot find what I'm after.</p>
  <p>Project: Blog
  I'm trying to URL design to the app using Django 2.0</p>
  <p><a href="https://i.stack.imgur.com/2XY73.png" rel="nofollow noreferrer">mysite/url.py</a></p>
  <p><a href="https://i.stack.imgur.com/4yUZU.png" rel="nofollow noreferrer">Error after run</a></p>
  <p><a href="https://i.stack.imgur.com/eQRnR.png" rel="nofollow noreferrer">server error</a></p>