Django Deprecation Timeline¶

This document outlines when various pieces of Django will be removed or altered in a backward incompatible way, following their deprecation, as per the deprecation policy. More details about each item can often be found in the release notes of two versions prior.

5.0¶

See the Django 4.0 release notes for more details on these changes.

The SERIALIZE test setting will be removed.
The undocumented django.utils.baseconv module will be removed.
The undocumented django.utils.datetime_safe module will be removed.
The default value of the USE_TZ setting will change from False to True.
The default sitemap protocol for sitemaps built outside the context of a request will change from 'http' to 'https'.
The extra_tests argument for DiscoverRunner.build_suite() and DiscoverRunner.run_tests() will be removed.
The django.contrib.postgres.aggregates.ArrayAgg, JSONBAgg, and StringAgg aggregates will return None when there are no rows instead of [], [], and '' respectively.
The USE_L10N setting will be removed.
The USE_DEPRECATED_PYTZ transitional setting will be removed.
Support for pytz timezones will be removed.
The is_dst argument will be removed from:
- QuerySet.datetimes()
- django.utils.timezone.make_aware()
- django.db.models.functions.Trunc()
- django.db.models.functions.TruncSecond()
- django.db.models.functions.TruncMinute()
- django.db.models.functions.TruncHour()
- django.db.models.functions.TruncDay()
- django.db.models.functions.TruncWeek()
- django.db.models.functions.TruncMonth()
- django.db.models.functions.TruncQuarter()
- django.db.models.functions.TruncYear()
The django.contrib.gis.admin.GeoModelAdmin and OSMGeoAdmin classes will be removed.
The undocumented BaseForm._html_output() method will be removed.
The ability to return a str, rather than a SafeString, when rendering an ErrorDict and ErrorList will be removed.

See the Django 4.1 release notes for more details on these changes.

The SitemapIndexItem.__str__() method will be removed.
The CSRF_COOKIE_MASKED transitional setting will be removed.
The name argument of django.utils.functional.cached_property() will be removed.
The opclasses argument of django.contrib.postgres.constraints.ExclusionConstraint will be removed.
The undocumented ability to pass errors=None to SimpleTestCase.assertFormError() and assertFormsetError() will be removed.
django.contrib.sessions.serializers.PickleSerializer will be removed.
The usage of QuerySet.iterator() on a queryset that prefetches related objects without providing the chunk_size argument will no longer be allowed.
Passing unsaved model instances to related filters will no longer be allowed.
created=True will be required in the signature of RemoteUserBackend.configure_user() subclasses.
Support for logging out via GET requests in the django.contrib.auth.views.LogoutView and django.contrib.auth.views.logout_then_login() will be removed.
The django.utils.timezone.utc alias to datetime.timezone.utc will be removed.
Passing a response object and a form/formset name to SimpleTestCase.assertFormError() and assertFormsetError() will no longer be allowed.
The django.contrib.gis.admin.OpenLayersWidget will be removed.
The django.contrib.auth.hashers.CryptPasswordHasher will be removed.
The "django/forms/default.html" and "django/forms/formsets/default.html" templates will be removed.
The ability to pass nulls_first=False or nulls_last=False to Expression.asc() and Expression.desc() methods, and the OrderBy expression will be removed.

4.1¶

See the Django 3.2 release notes for more details on these changes.

Support for assigning objects which don’t support creating deep copies with copy.deepcopy() to class attributes in TestCase.setUpTestData() will be removed.
BaseCommand.requires_system_checks won’t support boolean values.
The whitelist argument and domain_whitelist attribute of django.core.validators.EmailValidator will be removed.
The default_app_config module variable will be removed.
TransactionTestCase.assertQuerysetEqual() will no longer automatically call repr() on a queryset when compared to string values.
django.core.cache.backends.memcached.MemcachedCache will be removed.
Support for the pre-Django 3.2 format of messages used by django.contrib.messages.storage.cookie.CookieStorage will be removed.

4.0¶

See the Django 3.0 release notes for more details on these changes.

django.utils.http.urlquote(), urlquote_plus(), urlunquote(), and urlunquote_plus() will be removed.
django.utils.encoding.force_text() and smart_text() will be removed.
django.utils.translation.ugettext(), ugettext_lazy(), ugettext_noop(), ungettext(), and ungettext_lazy() will be removed.
django.views.i18n.set_language() will no longer set the user language in request.session (key django.utils.translation.LANGUAGE_SESSION_KEY).
alias=None will be required in the signature of django.db.models.Expression.get_group_by_cols() subclasses.
django.utils.text.unescape_entities() will be removed.
django.utils.http.is_safe_url() will be removed.

See the Django 3.1 release notes for more details on these changes.

The PASSWORD_RESET_TIMEOUT_DAYS setting will be removed.
The undocumented usage of the isnull lookup with non-boolean values as the right-hand side will no longer be allowed.
The django.db.models.query_utils.InvalidQuery exception class will be removed.
The django-admin.py entry point will be removed.
The HttpRequest.is_ajax() method will be removed.
Support for the pre-Django 3.1 encoding format of cookies values used by django.contrib.messages.storage.cookie.CookieStorage will be removed.
Support for the pre-Django 3.1 password reset tokens in the admin site (that use the SHA-1 hashing algorithm) will be removed.
Support for the pre-Django 3.1 encoding format of sessions will be removed.
Support for the pre-Django 3.1 django.core.signing.Signer signatures (encoded with the SHA-1 algorithm) will be removed.
Support for the pre-Django 3.1 django.core.signing.dumps() signatures (encoded with the SHA-1 algorithm) in django.core.signing.loads() will be removed.
Support for the pre-Django 3.1 user sessions (that use the SHA-1 algorithm) will be removed.
The get_response argument for django.utils.deprecation.MiddlewareMixin.__init__() will be required and won’t accept None.
The providing_args argument for django.dispatch.Signal will be removed.
The length argument for django.utils.crypto.get_random_string() will be required.
The list message for ModelMultipleChoiceField will be removed.
Support for passing raw column aliases to QuerySet.order_by() will be removed.
The model NullBooleanField will be removed. A stub field will remain for compatibility with historical migrations.
django.conf.urls.url() will be removed.
The model django.contrib.postgres.fields.JSONField will be removed. A stub field will remain for compatibility with historical migrations.
django.contrib.postgres.forms.JSONField, django.contrib.postgres.fields.jsonb.KeyTransform, and django.contrib.postgres.fields.jsonb.KeyTextTransform will be removed.
The {% ifequal %} and {% ifnotequal %} template tags will be removed.
The DEFAULT_HASHING_ALGORITHM transitional setting will be removed.

3.1¶

See the Django 2.2 release notes for more details on these changes.

django.utils.timezone.FixedOffset will be removed.
django.core.paginator.QuerySetPaginator will be removed.
A model’s Meta.ordering will no longer affect GROUP BY queries.
django.contrib.postgres.fields.FloatRangeField and django.contrib.postgres.forms.FloatRangeField will be removed.
The FILE_CHARSET setting will be removed.
django.contrib.staticfiles.storage.CachedStaticFilesStorage will be removed.
RemoteUserBackend.configure_user() will require request as the first positional argument.
Support for SimpleTestCase.allow_database_queries and TransactionTestCase.multi_db will be removed.

3.0¶

See the Django 2.0 release notes for more details on these changes.

The django.db.backends.postgresql_psycopg2 module will be removed.
django.shortcuts.render_to_response() will be removed.
The DEFAULT_CONTENT_TYPE setting will be removed.
HttpRequest.xreadlines() will be removed.
Support for the context argument of Field.from_db_value() and Expression.convert_value() will be removed.
The field_name keyword argument of QuerySet.earliest() and latest() will be removed.

See the Django 2.1 release notes for more details on these changes.

django.contrib.gis.db.models.functions.ForceRHR will be removed.
django.utils.http.cookie_date() will be removed.
The staticfiles and admin_static template tag libraries will be removed.
django.contrib.staticfiles.templatetags.static() will be removed.
The shim to allow InlineModelAdmin.has_add_permission() to be defined without an obj argument will be removed.

2.1¶

See the Django 1.11 release notes for more details on these changes.

contrib.auth.views.login(), logout(), password_change(), password_change_done(), password_reset(), password_reset_done(), password_reset_confirm(), and password_reset_complete() will be removed.
The extra_context parameter of contrib.auth.views.logout_then_login() will be removed.
django.test.runner.setup_databases() will be removed.
django.utils.translation.string_concat() will be removed.
django.core.cache.backends.memcached.PyLibMCCache will no longer support passing pylibmc behavior settings as top-level attributes of OPTIONS.
The host parameter of django.utils.http.is_safe_url() will be removed.
Silencing of exceptions raised while rendering the {% include %} template tag will be removed.
DatabaseIntrospection.get_indexes() will be removed.
The authenticate() method of authentication backends will require request as the first positional argument.
The django.db.models.permalink() decorator will be removed.
The USE_ETAGS setting will be removed. CommonMiddleware and django.utils.cache.patch_response_headers() will no longer set ETags.
The Model._meta.has_auto_field attribute will be removed.
url()”s support for inline flags in regular expression groups ((?i), (?L), (?m), (?s), and (?u)) will be removed.
Support for Widget.render() methods without the renderer argument will be removed.

2.0¶

See the Django 1.9 release notes for more details on these changes.

The weak argument to django.dispatch.signals.Signal.disconnect() will be removed.
django.db.backends.base.BaseDatabaseOperations.check_aggregate_support() will be removed.
The django.forms.extras package will be removed.
The assignment_tag helper will be removed.
The host argument to assertsRedirects will be removed. The compatibility layer which allows absolute URLs to be considered equal to relative ones when the path is identical will also be removed.
Field.rel will be removed.
Field.remote_field.to attribute will be removed.
The on_delete argument for ForeignKey and OneToOneField will be required.
django.db.models.fields.add_lazy_relation() will be removed.
When time zone support is enabled, database backends that don’t support time zones won’t convert aware datetimes to naive values in UTC anymore when such values are passed as parameters to SQL queries executed outside of the ORM, e.g. with cursor.execute().
The django.contrib.auth.tests.utils.skipIfCustomUser() decorator will be removed.
The GeoManager and GeoQuerySet classes will be removed.
The django.contrib.gis.geoip module will be removed.
The supports_recursion check for template loaders will be 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()
The load_template() and load_template_sources() template loader methods will be removed.
The template_dirs argument for template loaders will be 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()
The django.template.loaders.base.Loader.__call__() method will be removed.
Support for custom error views with a single positional parameter will be dropped.
The mime_type attribute of django.utils.feedgenerator.Atom1Feed and django.utils.feedgenerator.RssFeed will be removed in favor of content_type.
The app_name argument to django.conf.urls.include() will be removed.
Support for passing a 3-tuple as the first argument to include() will be removed.
Support for setting a URL instance namespace without an application namespace will be removed.
Field._get_val_from_obj() will be removed in favor of Field.value_from_object().
django.template.loaders.eggs.Loader will be removed.
The current_app parameter to the contrib.auth views will be removed.
The callable_obj keyword argument to SimpleTestCase.assertRaisesMessage() will be removed.
Support for the allow_tags attribute on ModelAdmin methods will be removed.
The enclosure keyword argument to SyndicationFeed.add_item() will be removed.
The django.template.loader.LoaderOrigin and django.template.base.StringOrigin aliases for django.template.base.Origin will be removed.

See the Django 1.10 release notes for more details on these changes.

The makemigrations --exit option will be removed.
Support for direct assignment to a reverse foreign key or many-to-many relation will be removed.
The get_srid() and set_srid() methods of django.contrib.gis.geos.GEOSGeometry will be removed.
The get_x(), set_x(), get_y(), set_y(), get_z(), and set_z() methods of django.contrib.gis.geos.Point will be removed.
The get_coords() and set_coords() methods of django.contrib.gis.geos.Point will be removed.
The cascaded_union property of django.contrib.gis.geos.MultiPolygon will be removed.
django.utils.functional.allow_lazy() will be removed.
The shell --plain option will be removed.
The django.core.urlresolvers module will be removed.
The model CommaSeparatedIntegerField will be removed. A stub field will remain for compatibility with historical migrations.
Support for the template Context.has_key() method will be removed.
Support for the django.core.files.storage.Storage.accessed_time(), created_time(), and modified_time() methods will be removed.
Support for query lookups using the model name when Meta.default_related_name is set will be removed.
The __search query lookup and the DatabaseOperations.fulltext_search_sql() method will be removed.
The shim for supporting custom related manager classes without a _apply_rel_filters() method will be removed.
Using User.is_authenticated() and User.is_anonymous() as methods will no longer be supported.
The private attribute virtual_fields of Model._meta will be removed.
The private keyword arguments virtual_only in Field.contribute_to_class() and virtual in Model._meta.add_field() will be removed.
The javascript_catalog() and json_catalog() views will be removed.
The django.contrib.gis.utils.precision_wkt() function will be removed.
In multi-table inheritance, implicit promotion of a OneToOneField to a parent_link will be removed.
Support for Widget._format_value() will be removed.
FileField methods get_directory_name() and get_filename() will be removed.
The mark_for_escaping() function and the classes it uses: EscapeData, EscapeBytes, EscapeText, EscapeString, and EscapeUnicode will be removed.
The escape filter will change to use django.utils.html.conditional_escape().
Manager.use_for_related_fields will be removed.
Model Manager inheritance will follow MRO inheritance rules and the Meta.manager_inheritance_from_future to opt-in to this behavior will be removed.
Support for old-style middleware using settings.MIDDLEWARE_CLASSES will be removed.

1.10¶

See the Django 1.8 release notes for more details on these changes.

Support for calling a SQLCompiler directly as an alias for calling its quote_name_unless_alias method will be removed.
cycle and firstof template tags will be removed from the future template tag library (used during the 1.6/1.7 deprecation period).
django.conf.urls.patterns() will be removed.
Support for the prefix argument to django.conf.urls.i18n.i18n_patterns() will be removed.
SimpleTestCase.urls will be removed.
Using an incorrect count of unpacked values in the for template tag will raise an exception rather than fail silently.
The ability to reverse URLs using a dotted Python path will be removed.
The ability to use a dotted Python path for the LOGIN_URL and LOGIN_REDIRECT_URL settings will be removed.
Support for optparse will be dropped for custom management commands (replaced by argparse).
The class django.core.management.NoArgsCommand will be removed. Use BaseCommand instead, which takes no arguments by default.
django.core.context_processors module will be removed.
django.db.models.sql.aggregates module will be removed.
django.contrib.gis.db.models.sql.aggregates module will be removed.
The following methods and properties of django.db.sql.query.Query will be removed:
- Properties: aggregates and aggregate_select
- Methods: add_aggregate, set_aggregate_mask, and append_aggregate_mask.
django.template.resolve_variable will be removed.
The following private APIs will be removed from django.db.models.options.Options (Model._meta):
- get_field_by_name()
- get_all_field_names()
- get_fields_with_model()
- get_concrete_fields_with_model()
- get_m2m_with_model()
- get_all_related_objects()
- get_all_related_objects_with_model()
- get_all_related_many_to_many_objects()
- get_all_related_m2m_objects_with_model()
The error_message argument of django.forms.RegexField will be removed.
The unordered_list filter will no longer support old style lists.
Support for string view arguments to url() will be removed.
The backward compatible shim to rename django.forms.Form._has_changed() to has_changed() will be removed.
The removetags template filter will be removed.
The remove_tags() and strip_entities() functions in django.utils.html will be removed.
The is_admin_site argument to django.contrib.auth.views.password_reset() will be removed.
django.db.models.field.subclassing.SubfieldBase will be removed.
django.utils.checksums will be removed; its functionality is included in django-localflavor 1.1+.
The original_content_type_id attribute on django.contrib.admin.helpers.InlineAdminForm will be removed.
The backwards compatibility shim to allow FormMixin.get_form() to be defined with no default value for its form_class argument will be removed.
The following settings will be removed:
- ALLOWED_INCLUDE_ROOTS
- TEMPLATE_CONTEXT_PROCESSORS
- TEMPLATE_DEBUG
- TEMPLATE_DIRS
- TEMPLATE_LOADERS
- TEMPLATE_STRING_IF_INVALID
The backwards compatibility alias django.template.loader.BaseLoader will be removed.
Django template objects returned by get_template() and select_template() won’t accept a Context in their render() method anymore.
Template response APIs will enforce the use of dict and backend-dependent template objects instead of Context and Template respectively.
The current_app parameter for the following function and classes will be removed:
- django.shortcuts.render()
- django.template.Context()
- django.template.RequestContext()
- django.template.response.TemplateResponse()
The dictionary and context_instance parameters for the following functions will be removed:
- django.shortcuts.render()
- django.shortcuts.render_to_response()
- django.template.loader.render_to_string()
The dirs parameter for the following functions will be removed:
- django.template.loader.get_template()
- django.template.loader.select_template()
- django.shortcuts.render()
- django.shortcuts.render_to_response()
Session verification will be enabled regardless of whether or not 'django.contrib.auth.middleware.SessionAuthenticationMiddleware' is in MIDDLEWARE_CLASSES.
Private attribute django.db.models.Field.related will be removed.
The --list option of the migrate management command will be removed.
The ssi template tag will be removed.
Support for the = comparison operator in the if template tag will be removed.
The backwards compatibility shims to allow Storage.get_available_name() and Storage.save() to be defined without a max_length argument will be removed.
Support for the legacy %(<foo>)s syntax in ModelFormMixin.success_url will be removed.
GeoQuerySet aggregate methods collect(), extent(), extent3d(), make_line(), and unionagg() will be removed.
Ability to specify ContentType.name when creating a content type instance will be removed.
Support for the old signature of allow_migrate will be removed. It changed from allow_migrate(self, db, model) to allow_migrate(self, db, app_label, model_name=None, **hints).
Support for the syntax of {% cycle %} that uses comma-separated arguments will be removed.
The warning that Signer issues when given an invalid separator will become an exception.

1.9¶

See the Django 1.7 release notes for more details on these changes.

django.utils.dictconfig will be removed.
django.utils.importlib will be removed.
django.utils.tzinfo will be removed.
django.utils.unittest will be removed.
The syncdb command will be removed.
django.db.models.signals.pre_syncdb and django.db.models.signals.post_syncdb will be removed.
allow_syncdb on database routers will no longer automatically become allow_migrate.
Automatic syncing of apps without migrations will be removed. Migrations will become compulsory for all apps unless you pass the --run-syncdb option to migrate.
The SQL management commands for apps without migrations, sql, sqlall, sqlclear, sqldropindexes, and sqlindexes, will be removed.
Support for automatic loading of initial_data fixtures and initial SQL data will be removed.
All models will need to be defined inside an installed application or declare an explicit app_label. Furthermore, it won’t be possible to import them before their application is loaded. In particular, it won’t be possible to import models inside the root package of their application.
The model and form IPAddressField will be removed. A stub field will remain for compatibility with historical migrations.
AppCommand.handle_app() will no longer be supported.
RequestSite and get_current_site() will no longer be importable from django.contrib.sites.models.
FastCGI support via the runfcgi management command will be removed. Please deploy your project using WSGI.
django.utils.datastructures.SortedDict will be removed. Use collections.OrderedDict from the Python standard library instead.
ModelAdmin.declared_fieldsets will be removed.
Instances of util.py in the Django codebase have been renamed to utils.py in an effort to unify all util and utils references. The modules that provided backwards compatibility will be removed:
- django.contrib.admin.util
- django.contrib.gis.db.backends.util
- django.db.backends.util
- django.forms.util
ModelAdmin.get_formsets will be removed.
The backward compatibility shim introduced to rename the BaseMemcachedCache._get_memcache_timeout() method to get_backend_timeout() will be removed.
The --natural and -n options for dumpdata will be removed.
The use_natural_keys argument for serializers.serialize() will be removed.
Private API django.forms.forms.get_declared_fields() will be removed.
The ability to use a SplitDateTimeWidget with DateTimeField will be removed.
The WSGIRequest.REQUEST property will be removed.
The class django.utils.datastructures.MergeDict will be removed.
The zh-cn and zh-tw language codes will be removed and have been replaced by the zh-hans and zh-hant language code respectively.
The internal django.utils.functional.memoize will be removed.
django.core.cache.get_cache will be removed. Add suitable entries to CACHES and use django.core.cache.caches instead.
django.db.models.loading will be removed.
Passing callable arguments to querysets will no longer be possible.
BaseCommand.requires_model_validation will be removed in favor of requires_system_checks. Admin validators will be replaced by admin checks.
The ModelAdmin.validator_class and default_validator_class attributes will be removed.
ModelAdmin.validate() will be removed.
django.db.backends.DatabaseValidation.validate_field will be removed in favor of the check_field method.
The validate management command will be removed.
django.utils.module_loading.import_by_path will be removed in favor of django.utils.module_loading.import_string.
ssi and url template tags will be removed from the future template tag library (used during the 1.3/1.4 deprecation period).
django.utils.text.javascript_quote will be removed.
Database test settings as independent entries in the database settings, prefixed by TEST_, will no longer be supported.
The cache_choices option to ModelChoiceField and ModelMultipleChoiceField will be removed.
The default value of the RedirectView.permanent attribute will change from True to False.
django.contrib.sitemaps.FlatPageSitemap will be removed in favor of django.contrib.flatpages.sitemaps.FlatPageSitemap.
Private API django.test.utils.TestTemplateLoader will be removed.
The django.contrib.contenttypes.generic module will be removed.
Private APIs django.db.models.sql.where.WhereNode.make_atom() and django.db.models.sql.where.Constraint will be removed.

1.8¶

See the Django 1.6 release notes for more details on these changes.

django.contrib.comments will be removed.
The following transaction management APIs will be removed:
- TransactionMiddleware,
- the decorators and context managers autocommit, commit_on_success, and commit_manually, defined in django.db.transaction,
- the functions commit_unless_managed and rollback_unless_managed, also defined in django.db.transaction,
- the TRANSACTIONS_MANAGED setting.
The cycle and firstof template tags will auto-escape their arguments. In 1.6 and 1.7, this behavior is provided by the version of these tags in the future template tag library.
The SEND_BROKEN_LINK_EMAILS setting will be removed. Add the django.middleware.common.BrokenLinkEmailsMiddleware middleware to your MIDDLEWARE_CLASSES setting instead.
django.middleware.doc.XViewMiddleware will be removed. Use django.contrib.admindocs.middleware.XViewMiddleware instead.
Model._meta.module_name was renamed to model_name.
Remove the backward compatible shims introduced to rename get_query_set and similar queryset methods. This affects the following classes: BaseModelAdmin, ChangeList, BaseCommentNode, GenericForeignKey, Manager, SingleRelatedObjectDescriptor and ReverseSingleRelatedObjectDescriptor.
Remove the backward compatible shims introduced to rename the attributes ChangeList.root_query_set and ChangeList.query_set.
django.views.defaults.shortcut will be removed, as part of the goal of removing all django.contrib references from the core Django codebase. Instead use django.contrib.contenttypes.views.shortcut. django.conf.urls.shortcut will also be removed.
Support for the Python Imaging Library (PIL) module will be removed, as it no longer appears to be actively maintained & does not work on Python 3.
The following private APIs will be removed:
- django.db.backend
- django.db.close_connection()
- django.db.backends.creation.BaseDatabaseCreation.set_autocommit()
- django.db.transaction.is_managed()
- django.db.transaction.managed()
django.forms.widgets.RadioInput will be removed in favor of django.forms.widgets.RadioChoiceInput.
The module django.test.simple and the class django.test.simple.DjangoTestSuiteRunner will be removed. Instead use django.test.runner.DiscoverRunner.
The module django.test._doctest will be removed. Instead use the doctest module from the Python standard library.
The CACHE_MIDDLEWARE_ANONYMOUS_ONLY setting will be removed.
Usage of the hard-coded Hold down «Control», or «Command» on a Mac, to select more than one. string to override or append to user-provided help_text in forms for ManyToMany model fields will not be performed by Django anymore either at the model or forms layer.
The Model._meta.get_(add|change|delete)_permission methods will be removed.
The session key django_language will no longer be read for backwards compatibility.
Geographic Sitemaps will be removed (django.contrib.gis.sitemaps.views.index and django.contrib.gis.sitemaps.views.sitemap).
django.utils.html.fix_ampersands, the fix_ampersands template filter and django.utils.html.clean_html will be removed following an accelerated deprecation.

1.7¶

See the Django 1.5 release notes for more details on these changes.

The module django.utils.simplejson will be removed. The standard library provides json which should be used instead.
The function django.utils.itercompat.product will be removed. The Python builtin version should be used instead.
Auto-correction of INSTALLED_APPS and TEMPLATE_DIRS settings when they are specified as a plain string instead of a tuple will be removed and raise an exception.
The mimetype argument to the __init__ methods of HttpResponse, SimpleTemplateResponse, and TemplateResponse, will be removed. content_type should be used instead. This also applies to the render_to_response() shortcut and the sitemap views, index() and sitemap().
When HttpResponse is instantiated with an iterator, or when content is set to an iterator, that iterator will be immediately consumed.
The AUTH_PROFILE_MODULE setting, and the get_profile() method on the User model, will be removed.
The cleanup management command will be removed. It’s replaced by clearsessions.
The daily_cleanup.py script will be removed.
The depth keyword argument will be removed from select_related().
The undocumented get_warnings_state()/restore_warnings_state() functions from django.test.utils and the save_warnings_state()/ restore_warnings_state() django.test.*TestCase methods are deprecated. Use the warnings.catch_warnings context manager available starting with Python 2.6 instead.
The undocumented check_for_test_cookie method in AuthenticationForm will be removed following an accelerated deprecation. Users subclassing this form should remove calls to this method, and instead ensure that their auth related views are CSRF protected, which ensures that cookies are enabled.
The version of django.contrib.auth.views.password_reset_confirm() that supports base36 encoded user IDs (django.contrib.auth.views.password_reset_confirm_uidb36) will be removed. If your site has been running Django 1.6 for more than PASSWORD_RESET_TIMEOUT_DAYS, this change will have no effect. If not, then any password reset links generated before you upgrade to Django 1.7 won’t work after the upgrade.
The django.utils.encoding.StrAndUnicode mix-in will be removed.

1.6¶

See the Django 1.4 release notes for more details on these changes.

django.contrib.databrowse will be removed.
django.contrib.localflavor will be removed following an accelerated deprecation.
django.contrib.markup will be removed following an accelerated deprecation.
The compatibility modules django.utils.copycompat and django.utils.hashcompat as well as the functions django.utils.itercompat.all and django.utils.itercompat.any will be removed. The Python builtin versions should be used instead.
The csrf_response_exempt and csrf_view_exempt decorators will be removed. Since 1.4 csrf_response_exempt has been a no-op (it returns the same function), and csrf_view_exempt has been a synonym for django.views.decorators.csrf.csrf_exempt, which should be used to replace it.
The django.core.cache.backends.memcached.CacheClass backend was split into two in Django 1.3 in order to introduce support for PyLibMC. The historical CacheClass will be removed in favor of django.core.cache.backends.memcached.MemcachedCache.
The UK-prefixed objects of django.contrib.localflavor.uk will only be accessible through their GB-prefixed names (GB is the correct ISO 3166 code for United Kingdom).
The IGNORABLE_404_STARTS and IGNORABLE_404_ENDS settings have been superseded by IGNORABLE_404_URLS in the 1.4 release. They will be removed.
The form wizard has been refactored to use class-based views with pluggable backends in 1.4. The previous implementation will be removed.
Legacy ways of calling cache_page() will be removed.
The backward-compatibility shim to automatically add a debug-false filter to the 'mail_admins' logging handler will be removed. The LOGGING setting should include this filter explicitly if it is desired.
The builtin truncation functions django.utils.text.truncate_words() and django.utils.text.truncate_html_words() will be removed in favor of the django.utils.text.Truncator class.
The django.contrib.gis.geoip.GeoIP class was moved to django.contrib.gis.geoip in 1.4 – the shortcut in django.contrib.gis.utils will be removed.
django.conf.urls.defaults will be removed. The functions include(), patterns(), and url(), plus handler404 and handler500 are now available through django.conf.urls.
The functions setup_environ() and execute_manager() will be removed from django.core.management. This also means that the old (pre-1.4) style of manage.py file will no longer work.
Setting the is_safe and needs_autoescape flags as attributes of template filter functions will no longer be supported.
The attribute HttpRequest.raw_post_data was renamed to HttpRequest.body in 1.4. The backward compatibility will be removed – HttpRequest.raw_post_data will no longer work.
The value for the post_url_continue parameter in ModelAdmin.response_add() will have to be either None (to redirect to the newly created object’s edit page) or a pre-formatted url. String formats, such as the previous default '../%s/', will not be accepted any more.

1.5¶

See the Django 1.3 release notes for more details on these changes.

Starting Django without a SECRET_KEY will result in an exception rather than a DeprecationWarning. (This is accelerated from the usual deprecation path; see the Django 1.4 release notes.)
The mod_python request handler will be removed. The mod_wsgi handler should be used instead.
The template attribute on django.test.client.Response objects returned by the test client will be removed. The templates attribute should be used instead.
The django.test.simple.DjangoTestRunner will be removed. Instead use a unittest-native class. The features of the django.test.simple.DjangoTestRunner (including fail-fast and Ctrl-C test termination) can be provided by unittest.TextTestRunner.
The undocumented function django.contrib.formtools.utils.security_hash will be removed, instead use django.contrib.formtools.utils.form_hmac
The function-based generic view modules will be removed in favor of their class-based equivalents, outlined here.
The django.core.servers.basehttp.AdminMediaHandler will be removed. In its place use django.contrib.staticfiles.handlers.StaticFilesHandler.
The template tags library adminmedia and the template tag {% admin_media_prefix %} will be removed in favor of the generic static files handling. (This is faster than the usual deprecation path; see the Django 1.4 release notes.)
The url and ssi template tags will be modified so that the first argument to each tag is a template variable, not an implied string. In 1.4, this behavior is provided by a version of the tag in the future template tag library.
The reset and sqlreset management commands will be removed.
Authentication backends will need to support an inactive user being passed to all methods dealing with permissions. The supports_inactive_user attribute will no longer be checked and can be removed from custom backends.
transform() will raise a GEOSException when called on a geometry with no SRID value.
django.http.CompatCookie will be removed in favor of django.http.SimpleCookie.
django.core.context_processors.PermWrapper and django.core.context_processors.PermLookupDict will be removed in favor of the corresponding django.contrib.auth.context_processors.PermWrapper and django.contrib.auth.context_processors.PermLookupDict, respectively.
The MEDIA_URL or STATIC_URL settings will be required to end with a trailing slash to ensure there is a consistent way to combine paths in templates.
django.db.models.fields.URLField.verify_exists will be removed. The feature was deprecated in 1.3.1 due to intractable security and performance issues and will follow a slightly accelerated deprecation timeframe.
Translations located under the so-called project path will be ignored during the translation building process performed at runtime. The LOCALE_PATHS setting can be used for the same task by including the filesystem path to a locale directory containing non-app-specific translations in its value.
The Markup contrib app will no longer support versions of Python-Markdown library earlier than 2.1. An accelerated timeline was used as this was a security related deprecation.
The CACHE_BACKEND setting will be removed. The cache backend(s) should be specified in the CACHES setting.

1.4¶

See the Django 1.2 release notes for more details on these changes.

CsrfResponseMiddleware and CsrfMiddleware will be removed. Use the {% csrf_token %} template tag inside forms to enable CSRF protection. CsrfViewMiddleware remains and is enabled by default.
The old imports for CSRF functionality (django.contrib.csrf.*), which moved to core in 1.2, will be removed.
The django.contrib.gis.db.backend module will be removed in favor of the specific backends.
SMTPConnection will be removed in favor of a generic email backend API.
The many to many SQL generation functions on the database backends will be removed.
The ability to use the DATABASE_* family of top-level settings to define database connections will be removed.
The ability to use shorthand notation to specify a database backend (i.e., sqlite3 instead of django.db.backends.sqlite3) will be removed.
The get_db_prep_save, get_db_prep_value and get_db_prep_lookup methods will have to support multiple databases.
The Message model (in django.contrib.auth), its related manager in the User model (user.message_set), and the associated methods (user.message_set.create() and user.get_and_delete_messages()), will be removed. The messages framework should be used instead. The related messages variable returned by the auth context processor will also be removed. Note that this means that the admin application will depend on the messages context processor.
Authentication backends will need to support the obj parameter for permission checking. The supports_object_permissions attribute will no longer be checked and can be removed from custom backends.
Authentication backends will need to support the AnonymousUser class being passed to all methods dealing with permissions. The supports_anonymous_user variable will no longer be checked and can be removed from custom backends.
The ability to specify a callable template loader rather than a Loader class will be removed, as will the load_template_source functions that are included with the built in template loaders for backwards compatibility.
django.utils.translation.get_date_formats() and django.utils.translation.get_partial_date_formats(). These functions will be removed; use the locale-aware django.utils.formats.get_format() to get the appropriate formats.
In django.forms.fields, the constants: DEFAULT_DATE_INPUT_FORMATS, DEFAULT_TIME_INPUT_FORMATS and DEFAULT_DATETIME_INPUT_FORMATS will be removed. Use django.utils.formats.get_format() to get the appropriate formats.
The ability to use a function-based test runner will be removed, along with the django.test.simple.run_tests() test runner.
The views.feed() view and feeds.Feed class in django.contrib.syndication will be removed. The class-based view views.Feed should be used instead.
django.core.context_processors.auth. This release will remove the old method in favor of the new method in django.contrib.auth.context_processors.auth.
The postgresql database backend will be removed, use the postgresql_psycopg2 backend instead.
The no language code will be removed and has been replaced by the nb language code.
Authentication backends will need to define the boolean attribute supports_inactive_user until version 1.5 when it will be assumed that all backends will handle inactive users.
django.db.models.fields.XMLField will be removed. This was deprecated as part of the 1.3 release. An accelerated deprecation schedule has been used because the field hasn’t performed any role beyond that of a simple TextField since the removal of oldforms. All uses of XMLField can be replaced with TextField.
The undocumented mixin parameter to the open() method of django.core.files.storage.Storage (and subclasses) will be removed.

1.3¶

See the Django 1.1 release notes for more details on these changes.

AdminSite.root(). This method of hooking up the admin URLs will be removed in favor of including admin.site.urls.
Authentication backends need to define the boolean attributes supports_object_permissions and supports_anonymous_user until version 1.4, at which point it will be assumed that all backends will support these options.