Drop support for Django 4.2, Django 5.0 and Django 5.1

README.md

@@ -31,7 +31,7 @@ Some reasons you might want to use REST framework:
 # Requirements
 
 * Python 3.10+
-* Django 4.2, 5.0, 5.1, 5.2, 6.0
+* Django 5.2, 6.0
 
 We **highly recommend** and only officially support the latest patch release of
 each Python and Django series.

docs/api-guide/fields.md

@@ -330,7 +330,7 @@ Corresponds to `django.db.models.fields.DateTimeField`.
 
 * `format` - A string representing the output format. If not specified, this defaults to the same value as the `DATETIME_FORMAT` settings key, which will be `'iso-8601'` unless set. Setting to a format string indicates that `to_representation` return values should be coerced to string output. Format strings are described below. Setting this value to `None` indicates that Python `datetime` objects should be returned by `to_representation`. In this case the datetime encoding will be determined by the renderer.
 * `input_formats` - A list of strings representing the input formats which may be used to parse the date.  If not specified, the `DATETIME_INPUT_FORMATS` setting will be used, which defaults to `['iso-8601']`.
-* `default_timezone` - A `tzinfo` subclass (`zoneinfo` or `pytz`) representing the timezone. If not specified and the `USE_TZ` setting is enabled, this defaults to the [current timezone][django-current-timezone]. If `USE_TZ` is disabled, then datetime objects will be naive.
+* `default_timezone` - A `tzinfo` subclass (`zoneinfo`) representing the timezone. If not specified and the `USE_TZ` setting is enabled, this defaults to the [current timezone][django-current-timezone]. If `USE_TZ` is disabled, then datetime objects will be naive.
 
 #### `DateTimeField` format strings.
 

docs/index.md

@@ -65,7 +65,7 @@ Some reasons you might want to use REST framework:
 
 REST framework requires the following:
 
-* Django (4.2, 5.0, 5.1, 5.2, 6.0)
+* Django (5.2, 6.0)
 * Python (3.10, 3.11, 3.12, 3.13, 3.14)
 
 We **highly recommend** and only officially support the latest patch release of

pyproject.toml

@@ -14,9 +14,6 @@ classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Environment :: Web Environment",
   "Framework :: Django",
-  "Framework :: Django :: 4.2",
-  "Framework :: Django :: 5.0",
-  "Framework :: Django :: 5.1",
   "Framework :: Django :: 5.2",
   "Framework :: Django :: 6.0",
   "Intended Audience :: Developers",
@@ -31,7 +28,7 @@ classifiers = [
   "Topic :: Internet :: WWW/HTTP",
 ]
 dynamic = [ "version" ]
-dependencies = [ "django>=4.2" ]
+dependencies = [ "django>=5.2" ]
 urls.Changelog = "https://www.django-rest-framework.org/community/release-notes/"
 urls.Funding = "https://fund.django-rest-framework.org/topics/funding/"
 urls.Homepage = "https://www.django-rest-framework.org"
@@ -51,8 +48,6 @@ test = [
   "pytest-cov==7.*",
   "pytest-django>=4.5.2,<5",
 
-  # Remove when dropping support for Django<5.0
-  "pytz",
 ]
 docs = [
   # MkDocs to build our documentation.
@@ -74,9 +69,6 @@ optional = [
   "requests",
   "uritemplate",
 ]
-django42 = [ "django>=4.2,<5.0" ]
-django50 = [ "django>=5.0,<5.1" ]
-django51 = [ "django>=5.1,<5.2" ]
 django52 = [ "django>=5.2,<6.0" ]
 django60 = [ "django>=6.0,<6.1" ]
 djangomain = [ "django @ https://github.com/django/django/archive/main.tar.gz" ]
@@ -101,7 +93,7 @@ skip = [ ".tox" ]
 atomic = true
 multi_line_output = 5
 extra_standard_library = [ "types" ]
-known_third_party = [ "pytest", "_pytest", "django", "pytz", "uritemplate" ]
+known_third_party = [ "pytest", "_pytest", "django", "uritemplate" ]
 known_first_party = [ "rest_framework", "tests" ]
 
 [tool.codespell]

rest_framework/compat.py

@@ -3,9 +3,6 @@
 versions of Django/Python, and compatibility wrappers around optional packages.
 """
 import django
-from django.db import models
-from django.db.models.constants import LOOKUP_SEP
-from django.db.models.sql.query import Node
 from django.views.generic import View
 
 
@@ -141,54 +138,6 @@ def md_filter_add_syntax_highlight(md):
         return False
 
 
-if django.VERSION >= (5, 1):
-    # Django 5.1+: use the stock ip_address_validators function
-    # Note: Before Django 5.1, ip_address_validators returns a tuple containing
-    #       1) the list of validators and 2) the error message. Starting from
-    #       Django 5.1 ip_address_validators only returns the list of validators
-    from django.core.validators import ip_address_validators
-
-    def get_referenced_base_fields_from_q(q):
-        return q.referenced_base_fields
-
-else:
-    # Django <= 5.1: create a compatibility shim for ip_address_validators
-    from django.core.validators import \
-        ip_address_validators as _ip_address_validators
-
-    def ip_address_validators(protocol, unpack_ipv4):
-        return _ip_address_validators(protocol, unpack_ipv4)[0]
-
-    # Django < 5.1: create a compatibility shim for Q.referenced_base_fields
-    # https://github.com/django/django/blob/5.1a1/django/db/models/query_utils.py#L179
-    def _get_paths_from_expression(expr):
-        if isinstance(expr, models.F):
-            yield expr.name
-        elif hasattr(expr, 'flatten'):
-            for child in expr.flatten():
-                if isinstance(child, models.F):
-                    yield child.name
-                elif isinstance(child, models.Q):
-                    yield from _get_children_from_q(child)
-
-    def _get_children_from_q(q):
-        for child in q.children:
-            if isinstance(child, Node):
-                yield from _get_children_from_q(child)
-            elif isinstance(child, tuple):
-                lhs, rhs = child
-                yield lhs
-                if hasattr(rhs, 'resolve_expression'):
-                    yield from _get_paths_from_expression(rhs)
-            elif hasattr(child, 'resolve_expression'):
-                yield from _get_paths_from_expression(child)
-
-    def get_referenced_base_fields_from_q(q):
-        return {
-            child.split(LOOKUP_SEP, 1)[0] for child in _get_children_from_q(q)
-        }
-
-
 if django.VERSION >= (6, 1):
     # `split_header_value` was added in Django 6.2 (backported to 6.1b1+),
     # replacing the `cc_delim_re` regular expression.

rest_framework/fields.py

@@ -16,7 +16,7 @@
 from django.core.validators import (
     EmailValidator, MaxLengthValidator, MaxValueValidator, MinLengthValidator,
     MinValueValidator, ProhibitNullCharactersValidator, RegexValidator,
-    URLValidator
+    URLValidator, ip_address_validators
 )
 from django.forms import FilePathField as DjangoFilePathField
 from django.forms import ImageField as DjangoImageField
@@ -30,13 +30,7 @@
 from django.utils.ipv6 import clean_ipv6_address
 from django.utils.translation import gettext_lazy as _
 
-try:
-    import pytz
-except ImportError:
-    pytz = None
-
 from rest_framework import DJANGO_DURATION_FORMAT, ISO_8601
-from rest_framework.compat import ip_address_validators
 from rest_framework.exceptions import ErrorDetail, ValidationError
 from rest_framework.settings import api_settings
 from rest_framework.utils import html, humanize_datetime, json, representation
@@ -1178,17 +1172,12 @@ def enforce_timezone(self, value):
                     return value.astimezone(field_timezone)
                 except OverflowError:
                     self.fail('overflow')
-            try:
-                dt = timezone.make_aware(value, field_timezone)
-                # When the resulting datetime is a ZoneInfo instance, it won't necessarily
-                # throw given an invalid datetime, so we need to specifically check.
-                if not valid_datetime(dt):
-                    self.fail('make_aware', timezone=field_timezone)
-                return dt
-            except Exception as e:
-                if pytz and isinstance(e, pytz.exceptions.InvalidTimeError):
-                    self.fail('make_aware', timezone=field_timezone)
-                raise e
+            dt = timezone.make_aware(value, field_timezone)
+            # When the resulting datetime is a ZoneInfo instance, it won't necessarily
+            # throw given an invalid datetime, so we need to specifically check.
+            if not valid_datetime(dt):
+                self.fail('make_aware', timezone=field_timezone)
+            return dt
         elif (field_timezone is None) and timezone.is_aware(value):
             return timezone.make_naive(value, datetime.timezone.utc)
         return value

rest_framework/serializers.py

@@ -26,9 +26,7 @@
 from django.utils.functional import cached_property
 from django.utils.translation import gettext_lazy as _
 
-from rest_framework.compat import (
-    get_referenced_base_fields_from_q, postgres_fields
-)
+from rest_framework.compat import postgres_fields
 from rest_framework.exceptions import ErrorDetail, ValidationError
 from rest_framework.fields import get_error_detail
 from rest_framework.settings import api_settings
@@ -1466,7 +1464,7 @@ def get_unique_together_constraints(self, model):
                     if constraint.condition is None:
                         condition_fields = []
                     else:
-                        condition_fields = list(get_referenced_base_fields_from_q(constraint.condition))
+                        condition_fields = list(constraint.condition.referenced_base_fields)
                     yield (constraint.fields, model._default_manager, condition_fields, constraint.condition)
 
     def get_uniqueness_extra_kwargs(self, field_names, declared_fields, extra_kwargs):

rest_framework/views.py

@@ -1,7 +1,6 @@
 """
 Provides an APIView class that is the base of all views in REST framework.
 """
-from django import VERSION as DJANGO_VERSION
 from django.conf import settings
 from django.core.exceptions import PermissionDenied
 from django.db import connections, models
@@ -143,8 +142,7 @@ def force_evaluation():
 
         # Exempt all DRF views from Django's LoginRequiredMiddleware. Users should set
         # DEFAULT_PERMISSION_CLASSES to 'rest_framework.permissions.IsAuthenticated' instead
-        if DJANGO_VERSION >= (5, 1):
-            view.login_required = False
+        view.login_required = False
 
         # Note: session based authentication is explicitly CSRF validated,
         # all other authentication is CSRF exempt.

rest_framework/viewsets.py

@@ -19,7 +19,6 @@
 from functools import update_wrapper
 from inspect import getmembers
 
-from django import VERSION as DJANGO_VERSION
 from django.urls import NoReverseMatch
 from django.utils.decorators import classonlymethod
 from django.views.decorators.csrf import csrf_exempt
@@ -140,8 +139,7 @@ def view(request, *args, **kwargs):
 
         # Exempt from Django's LoginRequiredMiddleware. Users should set
         # DEFAULT_PERMISSION_CLASSES to 'rest_framework.permissions.IsAuthenticated' instead
-        if DJANGO_VERSION >= (5, 1):
-            view.login_required = False
+        view.login_required = False
 
         return csrf_exempt(view)
 

tests/test_fields.py

@@ -9,9 +9,7 @@
 from unittest.mock import patch
 from zoneinfo import ZoneInfo
 
-import django
 import pytest
-import pytz
 from django.core.exceptions import ValidationError as DjangoValidationError
 from django.db.models import IntegerChoices, TextChoices
 from django.http import QueryDict
@@ -1713,7 +1711,7 @@ def setup_class(cls):
 
     def assertUTC(self, tzinfo):
         """
-        Check UTC for datetime.timezone, ZoneInfo, and pytz tzinfo instances.
+        Check UTC for datetime.timezone, ZoneInfo.
         """
         assert (
             tzinfo is utc or
@@ -1751,34 +1749,6 @@ def test_should_render_date_time_in_default_timezone(self):
         assert rendered_date == rendered_date_in_timezone
 
 
-@pytest.mark.skipif(
-    condition=django.VERSION >= (5,),
-    reason="Django 5.0 has removed pytz; this test should eventually be able to get removed.",
-)
-class TestPytzNaiveDayLightSavingTimeTimeZoneDateTimeField(FieldValues):
-    """
-    Invalid values for `DateTimeField` with datetime in DST shift (non-existing or ambiguous) and timezone with DST.
-    Timezone America/New_York has DST shift from 2017-03-12T02:00:00 to 2017-03-12T03:00:00 and
-     from 2017-11-05T02:00:00 to 2017-11-05T01:00:00 in 2017.
-    """
-    valid_inputs = {}
-    invalid_inputs = {
-        '2017-03-12T02:30:00': ['Invalid datetime for the timezone "America/New_York".'],
-        '2017-11-05T01:30:00': ['Invalid datetime for the timezone "America/New_York".']
-    }
-    outputs = {}
-
-    class MockTimezone(pytz.BaseTzInfo):
-        @staticmethod
-        def localize(value, is_dst):
-            raise pytz.InvalidTimeError()
-
-        def __str__(self):
-            return 'America/New_York'
-
-    field = serializers.DateTimeField(default_timezone=MockTimezone())
-
-
 @patch('rest_framework.utils.timezone.datetime_ambiguous', return_value=True)
 class TestNaiveDayLightSavingTimeTimeZoneDateTimeField(FieldValues):
     """

tests/test_middleware.py

@@ -1,6 +1,3 @@
-import unittest
-
-import django
 from django.contrib.auth.models import User
 from django.http import HttpRequest
 from django.test import override_settings
@@ -113,7 +110,6 @@ def test_middleware_can_access_request_post_when_processing_response(self):
         assert response.status_code == 200
 
 
-@unittest.skipUnless(django.VERSION >= (5, 1), 'Only for Django 5.1+')
 @override_settings(
     ROOT_URLCONF='tests.test_middleware',
     MIDDLEWARE=(

tests/test_views.py

@@ -1,7 +1,5 @@
 import copy
-import unittest
 
-from django import VERSION as DJANGO_VERSION
 from django.test import TestCase
 from django.views.decorators.vary import vary_on_headers
 
@@ -177,7 +175,6 @@ def test_get_exception_handler(self):
         assert response.data == {'error': 'SyntaxError'}
 
 
-@unittest.skipUnless(DJANGO_VERSION >= (5, 1), 'Only for Django 5.1+')
 class TestLoginRequiredMiddlewareCompat(TestCase):
     def test_class_based_view_opted_out(self):
         class_based_view = BasicView.as_view()

tests/test_viewsets.py

@@ -1,8 +1,6 @@
-import unittest
 from functools import wraps
 
 import pytest
-from django import VERSION as DJANGO_VERSION
 from django.db import models
 from django.test import TestCase, override_settings
 from django.urls import include, path
@@ -198,7 +196,6 @@ def test_viewset_action_attr_for_extra_action(self):
         assert get.view.action == 'list_action'
         assert head.view.action == 'list_action'
 
-    @unittest.skipUnless(DJANGO_VERSION >= (5, 1), 'Only for Django 5.1+')
     def test_login_required_middleware_compat(self):
         view = ActionViewSet.as_view(actions={'get': 'list'})
         assert view.login_required is False

tox.ini

@@ -1,9 +1,9 @@
 [tox]
 envlist =
-       {py310}-{django42,django51,django52}
-       {py311}-{django42,django51,django52}
-       {py312}-{django42,django51,django52,django60,djangomain}
-       {py313}-{django51,django52,django60,djangomain}
+       {py310}-{django52}
+       {py311}-{django52}
+       {py312}-{django52,django60,djangomain}
+       {py313}-{django52,django60,djangomain}
        {py314}-{django52,django60,djangomain}
        base
        dist
@@ -20,9 +20,6 @@ pass_env =
 dependency_groups =
        test
        optional
-       django42: django42
-       django50: django50
-       django51: django51
        django52: django52
        django60: django60
        djangomain: djangomain