Drop Python 3.8 (hynek#768)

Author: hynek

CHANGELOG.md

@@ -15,6 +15,10 @@ You can find our backwards-compatibility policy [here](https://github.com/hynek/
 
 ## [Unreleased](https://github.com/hynek/structlog/compare/25.5.0...HEAD)
 
+### Removed
+
+- Python 3.8 support.
+
 
 ## [25.5.0](https://github.com/hynek/structlog/compare/25.4.0...25.5.0) - 2025-10-27
 

pyproject.toml

@@ -10,14 +10,13 @@ dynamic = ["readme", "version"]
 name = "structlog"
 description = "Structured Logging for Python"
 authors = [{ name = "Hynek Schlawack", email = "hs@ox.cx" }]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 license = "MIT OR Apache-2.0"
 keywords = ["logging", "structured", "structure", "log"]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "License :: OSI Approved :: Apache Software License",
     "License :: OSI Approved :: MIT License",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",

src/structlog/_base.py

@@ -11,7 +11,8 @@
 
 import sys
 
-from typing import Any, Iterable, Mapping, Sequence
+from collections.abc import Iterable, Mapping, Sequence
+from typing import Any
 
 from structlog.exceptions import DropEvent
 

src/structlog/_config.py

@@ -13,7 +13,8 @@
 import sys
 import warnings
 
-from typing import Any, Callable, Iterable, Sequence, Type, cast
+from collections.abc import Iterable, Sequence
+from typing import Any, Callable, cast
 
 from ._native import make_filtering_bound_logger
 from ._output import PrintLoggerFactory
@@ -53,7 +54,7 @@
         force_colors=_force_colors,
     ),
 ]
-_BUILTIN_DEFAULT_CONTEXT_CLASS = cast(Type[Context], dict)
+_BUILTIN_DEFAULT_CONTEXT_CLASS = cast(type[Context], dict)
 _BUILTIN_DEFAULT_WRAPPER_CLASS = make_filtering_bound_logger(0)
 _BUILTIN_DEFAULT_LOGGER_FACTORY = PrintLoggerFactory()
 _BUILTIN_CACHE_LOGGER_ON_FIRST_USE = False

src/structlog/contextvars.py

@@ -22,8 +22,9 @@
 import contextlib
 import contextvars
 
+from collections.abc import Generator, Mapping
 from types import FrameType
-from typing import Any, Generator, Mapping
+from typing import Any
 
 import structlog
 

src/structlog/dev.py

@@ -14,6 +14,7 @@
 import sys
 import warnings
 
+from collections.abc import Sequence
 from dataclasses import dataclass
 from io import StringIO
 from types import ModuleType
@@ -22,7 +23,6 @@
     Callable,
     Literal,
     Protocol,
-    Sequence,
     TextIO,
     cast,
 )

src/structlog/processors.py

@@ -19,14 +19,13 @@
 import threading
 import time
 
+from collections.abc import Collection, Sequence
 from types import FrameType, TracebackType
 from typing import (
     Any,
     Callable,
     ClassVar,
-    Collection,
     NamedTuple,
-    Sequence,
     TextIO,
     cast,
 )

src/structlog/stdlib.py

@@ -18,8 +18,9 @@
 import sys
 import warnings
 
+from collections.abc import Collection, Iterable, Sequence
 from functools import partial
-from typing import Any, Callable, Collection, Dict, Iterable, Sequence, cast
+from typing import Any, Callable, cast
 
 
 if sys.version_info >= (3, 11):
@@ -1121,7 +1122,7 @@ def format(self, record: logging.LogRecord) -> str:
             # We need to copy because it's possible that the same record gets
             # processed by multiple logging formatters. LogRecord.getMessage
             # would transform our dict into a str.
-            ed = cast(Dict[str, Any], record.msg).copy()
+            ed = cast(dict[str, Any], record.msg).copy()
             ed["_record"] = record
             ed["_from_structlog"] = True
         else:

src/structlog/testing.py

@@ -13,8 +13,9 @@
 
 from __future__ import annotations
 
+from collections.abc import Generator, Iterable
 from contextlib import contextmanager
-from typing import Any, Generator, Iterable, NamedTuple, NoReturn
+from typing import Any, NamedTuple, NoReturn
 
 from ._config import configure, get_config
 from ._log_levels import map_method_name

src/structlog/threadlocal.py

@@ -20,7 +20,8 @@
 import uuid
 import warnings
 
-from typing import Any, Generator, Iterator, TypeVar
+from collections.abc import Generator, Iterator
+from typing import Any, TypeVar
 
 import structlog