Welcome to Django 2.0!
These release notes cover the new features, as well as some backwards incompatible changes you’ll want to be aware of when upgrading from Django 1.11 or earlier. We’ve dropped some features that have reached the end of their deprecation cycle, and we’ve begun the deprecation process for some features.
See the Upgrading Django to a newer version guide if you’re updating an existing project.
Django 2.0 supports Python 3.5+. Since Django 1.11, support for Python 2.7 and 3.4 is removed. We highly recommend and only officially support the latest release of each series.
Following the release of Django 2.0, we suggest that third-party app authors
drop support for all versions of Django prior to 1.11. At that time, you should
be able run your package’s tests using python -Wd so that deprecation
warnings do appear. After making the deprecation warning fixes, your app should
be compatible with Django 2.0.
django.contrib.auth¶SessionAuthenticationMiddleware class is removed. It provided no
functionality since session authentication is unconditionally enabled in
Django 1.10.These features have reached the end of their deprecation cycle and are removed in Django 2.0. See Features deprecated in 1.9 and Features deprecated in 1.10 for details, including how to remove usage of these features.
weak argument to django.dispatch.signals.Signal.disconnect() is
removed.django.db.backends.base.BaseDatabaseOperations.check_aggregate_support()
is removed.django.forms.extras package is removed.assignment_tag helper is removed.host argument to SimpleTestCase.assertsRedirects() is removed.
The compatibility layer which allows absolute URLs to be considered equal to
relative ones when the path is identical is also removed.Field.rel and Field.remote_field.to are removed.on_delete argument for ForeignKey and OneToOneField are now
required.django.db.models.fields.add_lazy_relation() is removed.cursor.execute().django.contrib.auth.tests.utils.skipIfCustomUser() is removed.GeoManager and GeoQuerySet classes are removed.django.contrib.gis.geoip module is removed.supports_recursion check for template loaders is removed from:django.template.engine.Engine.find_template()django.template.loader_tags.ExtendsNode.find_template()django.template.loaders.base.Loader.supports_recursion()django.template.loaders.cached.Loader.supports_recursion()load_template and load_template_sources template loader methods
are removed.template_dirs argument for template loaders is removed:django.template.loaders.base.Loader.get_template()django.template.loaders.cached.Loader.cache_key()django.template.loaders.cached.Loader.get_template()django.template.loaders.cached.Loader.get_template_sources()django.template.loaders.filesystem.Loader.get_template_sources()django.template.loaders.base.Loader.__call__() is removed.exception parameter
is removed.mime_type attribute of django.utils.feedgenerator.Atom1Feed and
django.utils.feedgenerator.RssFeed is removed.app_name argument to include() is removed.include() is
removed.Field._get_val_from_obj() is removed.django.template.loaders.eggs.Loader is removed.current_app parameter to the contrib.auth function-based views is
removed.callable_obj keyword argument to
SimpleTestCase.assertRaisesMessage() is removed.allow_tags attribute on ModelAdmin methods is
removed.enclosure keyword argument to SyndicationFeed.add_item() is
removed.django.template.loader.LoaderOrigin and
django.template.base.StringOrigin aliases for
django.template.base.Origin are removed.makemigrations --exit option is removed.get_srid() and set_srid() methods of
django.contrib.gis.geos.GEOSGeometry are removed.get_x(), set_x(), get_y(), set_y(), get_z(), and
set_z() methods of django.contrib.gis.geos.Point are removed.get_coords() and set_coords() methods of
django.contrib.gis.geos.Point are removed.cascaded_union property of django.contrib.gis.geos.MultiPolygon
is removed.django.utils.functional.allow_lazy() is removed.shell --plain option is removed.django.core.urlresolvers module is removed.CommaSeparatedIntegerField is removed, except for support in historical
migrations.Context.has_key() method is removed.django.core.files.storage.Storage.accessed_time(),
created_time(), and modified_time() methods is removed.Meta.default_related_name is set is removed.__search lookup is removed._apply_rel_filters() method is removed.User.is_authenticated() and User.is_anonymous() as methods
rather than properties is no longer be supported.Model._meta.virtual_fields attribute is removed.virtual_only in Field.contribute_to_class() and
virtual in Model._meta.add_field() are removed.javascript_catalog() and json_catalog() views are removed.django.contrib.gis.utils.precision_wkt() is removed.OneToOneField to a
parent_link is removed.Widget._format_value() is removed.FileField methods get_directory_name() and get_filename() are
removed.mark_for_escaping() function and the classes it uses: EscapeData,
EscapeBytes, EscapeText, EscapeString, and EscapeUnicode are
removed.escape filter now uses django.utils.html.conditional_escape().Manager.use_for_related_fields is removed.Manager inheritance follows MRO inheritance rules. The requirement
to use Meta.manager_inheritance_from_future to opt-in to the behavior is
removed.settings.MIDDLEWARE_CLASSES is
removed.Jan 18, 2017