          if model_field.verbose_name is not None:
              kwargs['label'] = model_field.verbose_name
  
          if isinstance(model_field, models.AutoField) or not model_field.editable:
              kwargs['read_only'] = True
              # Read only implies that the field is not required.
              # We have a cleaner repr on the instance if we don't set it.
              kwargs.pop('required', None)
 
</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:
        if model_field.help_text:
            kwargs['help_text'] = model_field.help_text

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

          if isinstance(model_field, models.AutoField) or not model_field.editable:
              kwargs['read_only'] = True
              # Read only implies that the field is not required.
              # We have a cleaner repr on the instance if we don't set it.
              kwargs.pop('required', None)
keep keep add keep keep keep keep keep
 Added help_text argument to fields 
rest_framework/serializers.py