Drop Python 3.8 support (#977)

Now EOL:
https://discuss.python.org/t/python-3-8-is-now-officially-eol/66983 .

Author: adamchainz

.github/workflows/main.yml

@@ -20,7 +20,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-        - 3.8
         - 3.9
         - '3.10'
         - '3.11'

.pre-commit-config.yaml

@@ -34,7 +34,7 @@ repos:
   rev: v3.17.0
   hooks:
   - id: pyupgrade
-    args: [--py38-plus]
+    args: [--py39-plus]
 - repo: https://github.com/adamchainz/django-upgrade
   rev: 1.21.0
   hooks:

CHANGELOG.rst

@@ -2,6 +2,8 @@
 Changelog
 =========
 
+* Drop Python 3.8 support.
+
 * Support Python 3.13.
 
 4.4.0 (2024-06-19)

README.rst

@@ -47,7 +47,7 @@ Some good resources to read on the subject are:
 Requirements
 ------------
 
-Python 3.8 to 3.13 supported.
+Python 3.9 to 3.13 supported.
 
 Django 3.2 to 5.1 supported.
 

pyproject.toml

@@ -22,7 +22,7 @@ maintainers = [
 authors = [
   { name = "Otto Yiu", email = "[email protected]" },
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Environment :: Web Environment",
@@ -38,7 +38,6 @@ classifiers = [
   "Natural Language :: English",
   "Operating System :: OS Independent",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",

src/corsheaders/conf.py

@@ -1,9 +1,7 @@
 from __future__ import annotations
 
-from typing import List
-from typing import Pattern
-from typing import Sequence
-from typing import Tuple
+from collections.abc import Sequence
+from re import Pattern
 from typing import Union
 from typing import cast
 
@@ -53,7 +51,7 @@ def CORS_ALLOWED_ORIGINS(self) -> list[str] | tuple[str]:
             "CORS_ALLOWED_ORIGINS",
             getattr(settings, "CORS_ORIGIN_WHITELIST", ()),
         )
-        return cast(Union[List[str], Tuple[str]], value)
+        return cast(Union[list[str], tuple[str]], value)
 
     @property
     def CORS_ALLOWED_ORIGIN_REGEXES(self) -> Sequence[str | Pattern[str]]:

src/corsheaders/middleware.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import re
-from typing import Awaitable
+from collections.abc import Awaitable
 from typing import Callable
 from urllib.parse import SplitResult
 from urllib.parse import urlsplit

tests/requirements/compile.py

@@ -21,46 +21,6 @@
         *sys.argv[1:],
     ]
     run = partial(subprocess.run, check=True)
-    run(
-        [
-            *common_args,
-            "--python",
-            "3.8",
-            "--output-file",
-            "py38-django32.txt",
-        ],
-        input=b"Django>=3.2a1,<3.3",
-    )
-    run(
-        [
-            *common_args,
-            "--python",
-            "3.8",
-            "--output-file",
-            "py38-django40.txt",
-        ],
-        input=b"Django>=4.0a1,<4.1",
-    )
-    run(
-        [
-            *common_args,
-            "--python",
-            "3.8",
-            "--output-file",
-            "py38-django41.txt",
-        ],
-        input=b"Django>=4.1a1,<4.2",
-    )
-    run(
-        [
-            *common_args,
-            "--python",
-            "3.8",
-            "--output-file",
-            "py38-django42.txt",
-        ],
-        input=b"Django>=4.2a1,<5.0",
-    )
     run(
         [
             *common_args,