title: What is the right way to validate if an object exists in a django view without returning 404?
body: <p>I need to verify if an object exists and return the object, then based on that perform actions. What's the right way to do it without returning a 404?</p>
  
  <pre><code>try:
      listing = RealEstateListing.objects.get(slug_url = slug)
  except:
      listing = None
  
  if listing:
  </code></pre>