          private_item = Item.objects.create(source=private_source)
  
          # Only one source is available via all() due to the custom default manager.
          self.assertQuerysetEqual(
                  Source.objects.all(),
                  ["<Source: Source object>"]
          )
  
          self.assertEqual(public_item.source, public_source)
  
          # Make sure that an item can still access its related source even if the default
 
</s> remove                 InternalCertificationAudit._meta.verbose_name_plural,
                'Audits'
 </s> add             InternalCertificationAudit._meta.verbose_name_plural,
            'Audits' </s> remove                 b'--boundary',
                b'Content-ID: id; name="name"',
                b'',
                b'value',
                b'--boundary--'
                b''])
 </s> add             b'--boundary',
            b'Content-ID: id; name="name"',
            b'',
            b'value',
            b'--boundary--'
            b'']) </s> remove                 "<Article: Article 1>",
                "<Article: Article 2>",
 </s> add             "<Article: Article 1>",
            "<Article: Article 2>", </s> remove                     {'name': force_text(opts.verbose_name), 'key': escape(object_id)}
 </s> add                 {'name': force_text(opts.verbose_name), 'key': escape(object_id)} </s> remove                         form[cl.model._meta.pk.name].is_hidden)):
 </s> add                     form[cl.model._meta.pk.name].is_hidden)):
            Source.objects.all(),
            ["<Source: Source object>"]
          private_item = Item.objects.create(source=private_source)
  
          # Only one source is available via all() due to the custom default manager.
          self.assertQuerysetEqual(
            Source.objects.all(),
            ["<Source: Source object>"]
            Source.objects.all(),
            ["<Source: Source object>"]
          )
  
          self.assertEqual(public_item.source, public_source)
  
          # Make sure that an item can still access its related source even if the default
keep keep keep keep replace replace keep keep keep keep keep
 Fixed #21288 -- Fixed E126 pep8 warnings 
tests/reverse_single_related/tests.py