title: add a column under a condition in django
body: <p>This is my model</p>
  <pre><code>class User_quiz_logs(models.Model):
      user_id = models.ForeignKey(User, on_delete=models.CASCADE, null=False)
      user_quiz_id = models.AutoField(primary_key=True)
      response = models.CharField('response ', max_length=300, null=False)
      points = models.IntegerField('points', null=True)
      state_quiz = models.BooleanField('state', default=False)
  </code></pre>
  <p>has an attribute points that I want to add if it corresponds to the same person?</p>
  <p>Example</p>
  <pre><code>1   A   1   true    141
  2   A   1   true    141
  3   A   1   true    141
  4   B   5   true    165
  5   C   1   true    165
  </code></pre>
  <p>The person with id 141 the total sum of his points would be 3 and id 165 would be 6 total points.</p>