django 1.7+ default_permissions

class baseModel(models.Model):
    #....
    class Meta:
        default_permissions=‘add‘#should be (‘add‘,‘change‘,...)

Traceback (most recent call last):
  File "C:\Users\tommy.yu\Desktop\Captain\Captain-master\codes\Captain\manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\core\management\__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\core\management\__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\core\management\base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\core\management\base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\core\management\commands\migrate.py", line 165, in handle
    emit_post_migrate_signal(created_models, self.verbosity, self.interactive, connection.alias)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\core\management\sql.py", line 268, in emit_post_migrate_signal
    using=db)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\dispatch\dispatcher.py", line 198, in send
    response = receiver(signal=self, sender=sender, **named)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\contrib\auth\management\__init__.py", line 114, in create_permissions
    Permission.objects.using(using).bulk_create(perms)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\models\query.py", line 409, in bulk_create
    self._batched_insert(objs_without_pk, fields, batch_size)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\models\query.py", line 938, in _batched_insert
    using=self.db)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\models\manager.py", line 92, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\models\query.py", line 921, in _insert
    return query.get_compiler(using=using).execute_sql(return_id)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\models\sql\compiler.py", line 920, in execute_sql
    cursor.execute(sql, params)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\backends\utils.py", line 81, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\backends\utils.py", line 65, in execute
    return self.cursor.execute(sql, params)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\backends\utils.py", line 65, in execute
    return self.cursor.execute(sql, params)
  File "C:\Python27\lib\site-packages\django-1.7.2-py2.7.egg\django\db\backends\sqlite3\base.py", line 486, in execute
    return Database.Cursor.execute(self, query, params)
django.db.utils.IntegrityError: columns content_type_id, codename are not unique

    def execute(self, query, params=None):
        if params is None:
            return Database.Cursor.execute(self, query)
        query = self.convert_query(query)
        print query,params#在这里添加了print
        return Database.Cursor.execute(self, query, params)

SELECT "django_migrations"."app", "django_migrations"."name" FROM "django_migrations" ()
Operations to perform:
  Synchronize unmigrated apps: mptt
  Apply all migrations: admin, Core, contenttypes, auth, sessions
Synchronizing apps without migrations:
  Creating tables...
  Installing custom SQL...
  Installing indexes...
Running migrations:
  No migrations to apply.
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘logentry‘, ‘admin‘)
SELECT "auth_permission"."content_type_id", "auth_permission"."codename" FROM "auth_permission" INNER JOIN "django_content_type" ON ( "auth_permission"."content_t
ype_id" = "django_content_type"."id" ) WHERE "auth_permission"."content_type_id" IN (?) ORDER BY "django_content_type"."app_label" ASC, "django_content_type"."mod
el" ASC, "auth_permission"."codename" ASC (1,)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 "django_content_type"."app_label" = ? ORDER BY "django_content_type"."name" ASC (‘admin‘,)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘permission‘, ‘auth‘)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘group‘, ‘auth‘)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘user‘, ‘auth‘)
SELECT "auth_permission"."content_type_id", "auth_permission"."codename" FROM "auth_permission" INNER JOIN "django_content_type" ON ( "auth_permission"."content_t
ype_id" = "django_content_type"."id" ) WHERE "auth_permission"."content_type_id" IN (?, ?, ?) ORDER BY "django_content_type"."app_label" ASC, "django_content_type
"."model" ASC, "auth_permission"."codename" ASC (2, 3, 4)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 "django_content_type"."app_label" = ? ORDER BY "django_content_type"."name" ASC (‘auth‘,)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘contenttype‘, ‘contenttypes‘)
SELECT "auth_permission"."content_type_id", "auth_permission"."codename" FROM "auth_permission" INNER JOIN "django_content_type" ON ( "auth_permission"."content_t
ype_id" = "django_content_type"."id" ) WHERE "auth_permission"."content_type_id" IN (?) ORDER BY "django_content_type"."app_label" ASC, "django_content_type"."mod
el" ASC, "auth_permission"."codename" ASC (5,)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 "django_content_type"."app_label" = ? ORDER BY "django_content_type"."name" ASC (‘contenttypes‘,)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘session‘, ‘sessions‘)
SELECT "auth_permission"."content_type_id", "auth_permission"."codename" FROM "auth_permission" INNER JOIN "django_content_type" ON ( "auth_permission"."content_t
ype_id" = "django_content_type"."id" ) WHERE "auth_permission"."content_type_id" IN (?) ORDER BY "django_content_type"."app_label" ASC, "django_content_type"."mod
el" ASC, "auth_permission"."codename" ASC (6,)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 "django_content_type"."app_label" = ? ORDER BY "django_content_type"."name" ASC (‘sessions‘,)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘tag‘, ‘Core‘)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘contenttype‘, ‘Core‘)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘menu‘, ‘Core‘)
SELECT "django_content_type"."id", "django_content_type"."name", "django_content_type"."app_label", "django_content_type"."model" FROM "django_content_type" WHERE
 ("django_content_type"."model" = ? AND "django_content_type"."app_label" = ?) LIMIT 21 (‘page‘, ‘Core‘)
SELECT "auth_permission"."content_type_id", "auth_permission"."codename" FROM "auth_permission" INNER JOIN "django_content_type" ON ( "auth_permission"."content_t
ype_id" = "django_content_type"."id" ) WHERE "auth_permission"."content_type_id" IN (?, ?, ?, ?) ORDER BY "django_content_type"."app_label" ASC, "django_content_t
ype"."model" ASC, "auth_permission"."codename" ASC (8, 9, 10, 7)
INSERT INTO "auth_permission" ("name", "content_type_id", "codename") SELECT ? AS "name", ? AS "content_type_id", ? AS "codename" UNION ALL SELECT ?, ?, ? UNION A
LL SELECT ?, ?, ? UNION ALL SELECT ?, ?, ? UNION ALL SELECT ?, ?, ? UNION ALL SELECT ?, ?, ? UNION ALL SELECT ?, ?, ? (u‘Can a page‘, 10, ‘a_page‘, u‘Can d page‘,
 10, ‘d_page‘, u‘Can d page‘, 10, ‘d_page‘, ‘can_add_%(class)s‘, 10, ‘add‘, ‘can_change_%(class)s‘, 10, ‘change‘, ‘can_delete_%(class)s‘, 10, ‘delete‘, ‘can_read_
%(class)s‘, 10, ‘read‘)
Traceback (most recent call last):