Remove unused code

rest_framework/__init__.py

@@ -7,8 +7,6 @@
 \_| \_\____/\____/  \_/   |_| |_|  \__,_|_| |_| |_|\___| \_/\_/ \___/|_|  |_|\_|
 """
 
-import django
-
 __title__ = 'Django REST framework'
 __version__ = '3.15.1'
 __author__ = 'Tom Christie'
@@ -25,10 +23,6 @@
 ISO_8601 = 'iso-8601'
 
 
-if django.VERSION < (3, 2):
-    default_app_config = 'rest_framework.apps.RestFrameworkConfig'
-
-
 class RemovedInDRF315Warning(DeprecationWarning):
     pass
 

rest_framework/authtoken/__init__.py

@@ -1,4 +0,0 @@
-import django
-
-if django.VERSION < (3, 2):
-    default_app_config = 'rest_framework.authtoken.apps.AuthTokenConfig'

rest_framework/compat.py

@@ -151,30 +151,6 @@ def md_filter_add_syntax_highlight(md):
         return False
 
 
-if django.VERSION >= (4, 2):
-    # Django 4.2+: use the stock parse_header_parameters function
-    # Note: Django 4.1 also has an implementation of parse_header_parameters
-    #       which is slightly different from the one in 4.2, it needs
-    #       the compatibility shim as well.
-    from django.utils.http import parse_header_parameters
-else:
-    # Django <= 4.1: create a compatibility shim for parse_header_parameters
-    from django.http.multipartparser import parse_header
-
-    def parse_header_parameters(line):
-        # parse_header works with bytes, but parse_header_parameters
-        # works with strings. Call encode to convert the line to bytes.
-        main_value_pair, params = parse_header(line.encode())
-        return main_value_pair, {
-            # parse_header will convert *some* values to string.
-            # parse_header_parameters converts *all* values to string.
-            # Make sure all values are converted by calling decode on
-            # any remaining non-string values.
-            k: v if isinstance(v, str) else v.decode()
-            for k, v in params.items()
-        }
-
-
 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

rest_framework/filters.py

@@ -114,10 +114,6 @@ def construct_search(self, field_name, queryset):
                     if hasattr(field, "path_infos"):
                         # Update opts to follow the relation.
                         opts = field.path_infos[-1].to_opts
-                    # django < 4.1
-                    elif hasattr(field, 'get_path_info'):
-                        # Update opts to follow the relation.
-                        opts = field.get_path_info()[-1].to_opts
             # Otherwise, use the field with icontains.
             lookup = 'icontains'
         return LOOKUP_SEP.join([field_name, lookup])

rest_framework/parsers.py

@@ -15,9 +15,9 @@
 from django.http.multipartparser import \
     MultiPartParser as DjangoMultiPartParser
 from django.http.multipartparser import MultiPartParserError
+from django.utils.http import parse_header_parameters
 
 from rest_framework import renderers
-from rest_framework.compat import parse_header_parameters
 from rest_framework.exceptions import ParseError
 from rest_framework.settings import api_settings
 from rest_framework.utils import json

rest_framework/renderers.py

@@ -19,12 +19,13 @@
 from django.template import engines, loader
 from django.urls import NoReverseMatch
 from django.utils.html import mark_safe
+from django.utils.http import parse_header_parameters
 from django.utils.safestring import SafeString
 
 from rest_framework import VERSION, exceptions, serializers, status
 from rest_framework.compat import (
     INDENT_SEPARATORS, LONG_SEPARATORS, SHORT_SEPARATORS, coreapi, coreschema,
-    parse_header_parameters, pygments_css, yaml
+    pygments_css, yaml
 )
 from rest_framework.exceptions import ParseError
 from rest_framework.request import is_form_media_type, override_method

rest_framework/request.py

@@ -16,9 +16,9 @@
 from django.http import HttpRequest, QueryDict
 from django.http.request import RawPostDataException
 from django.utils.datastructures import MultiValueDict
+from django.utils.http import parse_header_parameters
 
 from rest_framework import exceptions
-from rest_framework.compat import parse_header_parameters
 from rest_framework.settings import api_settings
 
 

rest_framework/test.py

@@ -3,7 +3,6 @@
 import io
 from importlib import import_module
 
-import django
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 from django.core.handlers.wsgi import WSGIHandler
@@ -394,19 +393,7 @@ def setUpClass(cls):
 
         cls._override.enable()
 
-        if django.VERSION > (4, 0):
-            cls.addClassCleanup(cls._override.disable)
-            cls.addClassCleanup(cleanup_url_patterns, cls)
+        cls.addClassCleanup(cls._override.disable)
+        cls.addClassCleanup(cleanup_url_patterns, cls)
 
         super().setUpClass()
-
-    if django.VERSION < (4, 0):
-        @classmethod
-        def tearDownClass(cls):
-            super().tearDownClass()
-            cls._override.disable()
-
-            if hasattr(cls, '_module_urlpatterns'):
-                cls._module.urlpatterns = cls._module_urlpatterns
-            else:
-                del cls._module.urlpatterns

rest_framework/utils/mediatypes.py

@@ -3,7 +3,7 @@
 
 See https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7
 """
-from rest_framework.compat import parse_header_parameters
+from django.utils.http import parse_header_parameters
 
 
 def media_type_matches(lhs, rhs):

tests/authentication/test_authentication.py

@@ -1,6 +1,5 @@
 import base64
 
-import django
 import pytest
 from django.conf import settings
 from django.contrib.auth.models import User
@@ -235,21 +234,13 @@ def test_post_form_session_auth_passing_csrf(self):
         Ensure POSTing form over session authentication with CSRF token succeeds.
         Regression test for #6088
         """
-        # Remove this shim when dropping support for Django 3.0.
-        if django.VERSION < (3, 1):
-            from django.middleware.csrf import _get_new_csrf_token
-        else:
-            from django.middleware.csrf import (
-                _get_new_csrf_string, _mask_cipher_secret
-            )
-
-            def _get_new_csrf_token():
-                return _mask_cipher_secret(_get_new_csrf_string())
-
         self.csrf_client.login(username=self.username, password=self.password)
 
         # Set the csrf_token cookie so that CsrfViewMiddleware._get_token() works
-        token = _get_new_csrf_token()
+        from django.middleware.csrf import (
+            _get_new_csrf_string, _mask_cipher_secret
+        )
+        token = _mask_cipher_secret(_get_new_csrf_string())
         self.csrf_client.cookies[settings.CSRF_COOKIE_NAME] = token
 
         # Post the token matching the cookie value

tests/conftest.py

@@ -13,8 +13,6 @@ def pytest_addoption(parser):
 def pytest_configure(config):
     from django.conf import settings
 
-    # USE_L10N is deprecated, and will be removed in Django 5.0.
-    use_l10n = {"USE_L10N": True} if django.VERSION < (4, 0) else {}
     settings.configure(
         DEBUG_PROPAGATE_EXCEPTIONS=True,
         DATABASES={
@@ -64,7 +62,6 @@ def pytest_configure(config):
         PASSWORD_HASHERS=(
             'django.contrib.auth.hashers.MD5PasswordHasher',
         ),
-        **use_l10n,
     )
 
     # guardian is optional
@@ -87,10 +84,7 @@ def pytest_configure(config):
         import rest_framework
         settings.STATIC_ROOT = os.path.join(os.path.dirname(rest_framework.__file__), 'static-root')
         backend = 'django.contrib.staticfiles.storage.ManifestStaticFilesStorage'
-        if django.VERSION < (4, 2):
-            settings.STATICFILES_STORAGE = backend
-        else:
-            settings.STORAGES['staticfiles']['BACKEND'] = backend
+        settings.STORAGES['staticfiles']['BACKEND'] = backend
 
     django.setup()
 

tests/test_model_serializer.py

@@ -12,7 +12,6 @@
 import sys
 import tempfile
 
-import django
 import pytest
 from django.core.exceptions import ImproperlyConfigured
 from django.core.serializers.json import DjangoJSONEncoder
@@ -453,14 +452,11 @@ class Meta:
                 model = ArrayFieldModel
                 fields = ['array_field', 'array_field_with_blank']
 
-        validators = ""
-        if django.VERSION < (4, 1):
-            validators = ", validators=[<django.core.validators.MaxLengthValidator object>]"
         expected = dedent("""
             TestSerializer():
-                array_field = ListField(allow_empty=False, child=CharField(label='Array field'%s))
-                array_field_with_blank = ListField(child=CharField(label='Array field with blank'%s), required=False)
-        """ % (validators, validators))
+                array_field = ListField(allow_empty=False, child=CharField(label='Array field'))
+                array_field_with_blank = ListField(child=CharField(label='Array field with blank'), required=False)
+        """)
         self.assertEqual(repr(TestSerializer()), expected)
 
     @pytest.mark.skipif(hasattr(models, 'JSONField'), reason='has models.JSONField')

tests/test_testing.py

@@ -2,7 +2,6 @@
 from io import BytesIO
 from unittest.mock import patch
 
-import django
 from django.contrib.auth.models import User
 from django.http import HttpResponseRedirect
 from django.shortcuts import redirect
@@ -334,18 +333,10 @@ def setUpClass(cls):
         super().setUpClass()
         assert urlpatterns is cls.urlpatterns
 
-        if django.VERSION > (4, 0):
-            cls.addClassCleanup(
-                check_urlpatterns,
-                cls
-            )
-
-    if django.VERSION < (4, 0):
-        @classmethod
-        def tearDownClass(cls):
-            assert urlpatterns is cls.urlpatterns
-            super().tearDownClass()
-            assert urlpatterns is not cls.urlpatterns
+        cls.addClassCleanup(
+            check_urlpatterns,
+            cls
+        )
 
     def test_urlpatterns(self):
         assert self.client.get('/').status_code == 200