text: from __future__ import unicode_literals
  
  from django.db import models
  from django.utils.encoding import python_2_unicode_compatible
  
  from ..helpers.validators import data_type_name_validator
  
  
  @python_2_unicode_compatible
  class DataType(models.Model):
      name = models.SlugField(max_length=60, unique=True,
                              validators=[data_type_name_validator])
      description = models.TextField(blank=True)
  
      def __str__(self):
          return "{}".format(self.name)
  
      class Meta:
          app_label = 'datasets'
          ordering = ['name']
  