          self.default = default
          self.source = source
          self.initial = initial
          self.label = label
          self.style = {} if style is None else style
          self.validators = validators or self.default_validators[:]
  
          # Collect default error message from self and parent classes
 
</s> remove         # if issubclass(model_field.__class__, models.TextField):
        #     kwargs['widget'] = widgets.Textarea

        # if model_field.help_text is not None:
        #     kwargs['help_text'] = model_field.help_text

        # TODO: TypedChoiceField?
        if model_field.flatchoices:  # This ModelField contains choices
            kwargs['choices'] = model_field.flatchoices
            if model_field.null:
                kwargs['empty'] = None
            return ChoiceField(**kwargs)

        if model_field.null and \
                issubclass(model_field.__class__, (models.CharField, models.TextField)):
            kwargs['allow_none'] = True

 </s> add  </s> remove             #  if model_field.help_text is not None:
            #      kwargs['help_text'] = model_field.help_text
            if model_field.verbose_name is not None:
 </s> add             if model_field.verbose_name: </s> remove             #  if model_field.help_text is not None:
            #      kwargs['help_text'] = model_field.help_text
            if model_field.verbose_name is not None:
 </s> add             if model_field.verbose_name: </s> remove     def get_default_fields(self):
        fields = super(HyperlinkedModelSerializer, self).get_default_fields()

        if self.opts.view_name is None:
            self.opts.view_name = self.get_default_view_name(self.opts.model)

        url_field_name = api_settings.URL_FIELD_NAME
        if url_field_name not in fields:
            ret = fields.__class__()
            ret[url_field_name] = self.get_url_field()
            ret.update(fields)
            fields = ret

        return fields

    def get_pk_field(self, model_field):
        if self.opts.fields and model_field.name in self.opts.fields:
            return self.get_field(model_field)

 </s> add 
        self.help_text = help_text
          self.default = default
          self.source = source
          self.initial = initial
          self.label = label
        self.help_text = help_text
          self.style = {} if style is None else style
          self.validators = validators or self.default_validators[:]
  
          # Collect default error message from self and parent classes
keep keep keep add keep keep keep keep
 Added help_text argument to fields 
rest_framework/fields.py