"""

33. get_or_create()

``get_or_create()`` does what it says: it tries to look up an object with the

given parameters. If an object isn't found, it creates one with the given

parameters.

"""

from django.db import models, IntegrityError

class Person(models.Model):

    first_name = models.CharField(max_length=100)

    last_name = models.CharField(max_length=100)

    birthday = models.DateField()

    def __unicode__(self):

        return u'%s %s' % (self.first_name, self.last_name)

class ManualPrimaryKeyTest(models.Model):

    id = models.IntegerField(primary_key=True)

    data = models.CharField(max_length=100)