Fixed #2936, #6500 -- Added a __hash__() method to Models (since we implement...

    def __ne__(self, other):

        return not self.__eq__(other)

    def __hash__(self):

        return hash(self._get_pk_val())

    def __init__(self, *args, **kwargs):

        dispatcher.send(signal=signals.pre_init, sender=self.__class__, args=args, kwargs=kwargs)

This is a basic model with only two non-primary-key fields.

"""

try:

    set

except NameError:

    from sets import Set as set

from django.db import models

class Article(models.Model):

>>> a.save()

>>> Article.objects.get(pk=a.id).headline

u'\u6797\u539f \u3081\u3050\u307f'

# Model instances have a hash function, so they can be used in sets or as

# dictionary keys. Two models compare as equal if their primary keys are equal.

>>> s = set([a10, a11, a12])

>>> Article.objects.get(headline='Article 11') in s

True

"""