  
      class PartialAuthorForm(ModelForm):
          class Meta:
              model = Author
              exclude = ('birth_date',)
  
  Since the Author model has only 3 fields, 'name', 'title', and
  'birth_date', the forms above will contain exactly the same fields.
  
  .. note::
 
</s> remove             fields = ('name', 'title')
 </s> add             fields = ('name', 'birth_date') </s> remove above) that includes only the ``name`` and ``title`` fields, you would
 </s> add above) that includes only the ``name`` and ``birth_date`` fields, you would
            exclude = ('title',)
  
      class PartialAuthorForm(ModelForm):
          class Meta:
              model = Author
            exclude = ('title',)
  
  Since the Author model has only 3 fields, 'name', 'title', and
  'birth_date', the forms above will contain exactly the same fields.
  
  .. note::
keep keep keep keep replace keep keep keep keep keep
 fixing modelforms example code, ticket #18832 
docs/topics/forms/modelforms.txt