          self.assertQuerysetEqual(Choice.objects.filter(choice__exact=None), [])
  
          # Excluding the previous result returns everything.
          self.assertQuerysetEqual(
                  Choice.objects.exclude(choice=None).order_by('id'),
                  [
                      '<Choice: Choice: Because. in poll Q: Why? >',
                      '<Choice: Choice: Why Not? in poll Q: Why? >'
                  ]
          )
  
          # Valid query, but fails because foo isn't a keyword
          self.assertRaises(FieldError, Choice.objects.filter, foo__exact=None)
  
 
</s> remove                 "<Child7: barney>",
                "<Child7: fred>"
 </s> add             "<Child7: barney>",
            "<Child7: fred>" </s> remove                 "<Article: Article 1>",
                "<Article: Article 2>",
 </s> add             "<Article: Article 1>",
            "<Article: Article 2>", </s> remove                 data={'description': 'Assistance'},
                instance=instance)
 </s> add             data={'description': 'Assistance'},
            instance=instance) </s> remove                 InternalCertificationAudit._meta.verbose_name_plural,
                'Audits'
 </s> add             InternalCertificationAudit._meta.verbose_name_plural,
            'Audits' </s> remove                 data={'description': 'An image'},
                files={'image': SimpleUploadedFile('test.png', image_data)})
 </s> add             data={'description': 'An image'},
            files={'image': SimpleUploadedFile('test.png', image_data)})
            Choice.objects.exclude(choice=None).order_by('id'),
            [
                '<Choice: Choice: Because. in poll Q: Why? >',
                '<Choice: Choice: Why Not? in poll Q: Why? >'
            ]
          self.assertQuerysetEqual(Choice.objects.filter(choice__exact=None), [])
  
          # Excluding the previous result returns everything.
          self.assertQuerysetEqual(
            Choice.objects.exclude(choice=None).order_by('id'),
            [
                '<Choice: Choice: Because. in poll Q: Why? >',
                '<Choice: Choice: Why Not? in poll Q: Why? >'
            ]
            Choice.objects.exclude(choice=None).order_by('id'),
            [
                '<Choice: Choice: Because. in poll Q: Why? >',
                '<Choice: Choice: Why Not? in poll Q: Why? >'
            ]
            Choice.objects.exclude(choice=None).order_by('id'),
            [
                '<Choice: Choice: Because. in poll Q: Why? >',
                '<Choice: Choice: Why Not? in poll Q: Why? >'
            ]
            Choice.objects.exclude(choice=None).order_by('id'),
            [
                '<Choice: Choice: Because. in poll Q: Why? >',
                '<Choice: Choice: Why Not? in poll Q: Why? >'
            ]
            Choice.objects.exclude(choice=None).order_by('id'),
            [
                '<Choice: Choice: Because. in poll Q: Why? >',
                '<Choice: Choice: Why Not? in poll Q: Why? >'
            ]
          )
  
          # Valid query, but fails because foo isn't a keyword
          self.assertRaises(FieldError, Choice.objects.filter, foo__exact=None)
  
keep keep keep keep replace replace replace replace replace keep keep keep keep keep
 Fixed #21288 -- Fixed E126 pep8 warnings 
tests/null_queries/tests.py