                  (2, 'Second'),
          )
          ),
          ('Group 2', (
                  (3, 'Third'),
                  (4, 'Fourth'),
          )
          ),
          (0, 'Other'),
      )
      c = models.IntegerField(choices=CHOICES, null=True)
 
</s> remove                 (1, 'First'),
                (2, 'Second'),
 </s> add             (1, 'First'),
            (2, 'Second'), </s> remove                     'django.template.loaders.filesystem.Loader',
 </s> add                 'django.template.loaders.filesystem.Loader', </s> remove                 Party.objects.filter(when__year='1'), [
                        datetime.date(1, 3, 3),
                ],
                attrgetter("when")
 </s> add             Party.objects.filter(when__year='1'), [
                datetime.date(1, 3, 3),
            ],
            attrgetter("when") </s> remove                 blank=True, null=True)
 </s> add             blank=True, null=True) </s> remove                 blank=True, null=True)
 </s> add             blank=True, null=True)
            (3, 'Third'),
            (4, 'Fourth'),
                  (2, 'Second'),
          )
          ),
          ('Group 2', (
            (3, 'Third'),
            (4, 'Fourth'),
            (3, 'Third'),
            (4, 'Fourth'),
          )
          ),
          (0, 'Other'),
      )
      c = models.IntegerField(choices=CHOICES, null=True)
keep keep keep keep replace replace keep keep keep keep keep
 Fixed #21288 -- Fixed E126 pep8 warnings 
tests/model_fields/models.py