                      (field_name, model.__class__.__name__)
                  )
  
              # Check that any fields declared on the class are
              # also explicity included in `Meta.fields`.
              missing_fields = set(declared_fields.keys()) - set(fields)
              if missing_fields:
                  missing_field = list(missing_fields)[0]
                  raise ImproperlyConfigured(
                      'Field `%s` has been declared on serializer `%s`, but '
 
</s> remove     don't need to dig into the implemention.
 </s> add     don't need to dig into the implementation. </s> remove             'The `.create()` method does not suport nested writable fields '
 </s> add             'The `.create()` method does not support nested writable fields ' </s> remove             'The `.update()` method does not suport nested writable fields '
 </s> add             'The `.update()` method does not support nested writable fields ' </s> remove         raise ImproperlyConfigured('Returned a template response with no `template_name` attribute set on either the view or response')
 </s> add         raise ImproperlyConfigured(
            'Returned a template response with no `template_name` attribute set on either the view or response'
        ) </s> remove class IneritedModelSerializationTests(TestCase):
 </s> add class InheritedModelSerializationTests(TestCase):
            # also explicitly included in `Meta.fields`.
                      (field_name, model.__class__.__name__)
                  )
  
              # Check that any fields declared on the class are
            # also explicitly included in `Meta.fields`.
              missing_fields = set(declared_fields.keys()) - set(fields)
              if missing_fields:
                  missing_field = list(missing_fields)[0]
                  raise ImproperlyConfigured(
                      'Field `%s` has been declared on serializer `%s`, but '
keep keep keep keep replace keep keep keep keep keep
 Removed unused imports, pep8 fixes, typo fixes 
rest_framework/serializers.py