Using the enum below you can create django model choises pretty easily

Enum = type('Enum', (tuple, ), {
    '__init__': lambda s, i: [
        setattr(s, k, 1 << x)
        for x, k in enumerate(i)
    ] and tuple.__init__(s, i)
})

USER_TYPES = Enum(["Person", "Robot", "Company"])

Usage with django models

from django.db import models


class Person(models.Model):
    name = models.CharField()
    kind = models.IntegerField(choices=USER_TYPES, default=USER_TYPES.Person)