build: drop python 3.9, add python 3.14

josheppinette · josheppinette · commit 766cf9be8d56 · 2026-03-11T11:24:13.000-06:00
Python 3.9 was marked as end of life on October 31, 2025. Therefore,
official support for it has been removed. Official support has been
added for Python 3.14 (October 7, 2025).

- The removal of 3.9 support allowed the removal of many unnecessary typing
  module imports in favor of builtin keywords.
- All development dependencies have been upgraded to latest.
diff --git a/.envrc b/.envrc
@@ -2,6 +2,6 @@ if command -v pyenv >/dev/null 2>&1; then
 	layout pyenv $(cat runtimes.txt)
 elif command -v nix >/dev/null 2>&1; then
 	use flake
-	layout python python3.13
+	layout python python3.14
 	watch_file external/**
 fi
diff --git a/README.md b/README.md
@@ -4,7 +4,7 @@
 
 [![pre-commit](https://github.com/josheppinette/python-logfmter/actions/workflows/pre-commit.yml/badge.svg)](https://github.com/josheppinette/python-logfmter/actions/workflows/pre-commit.yml)
 [![test](https://github.com/josheppinette/python-logfmter/actions/workflows/test.yml/badge.svg)](https://github.com/josheppinette/python-logfmter/actions/workflows/test.yml)
-[![python-3.9-3.10-3.11-3.12-3.13](https://img.shields.io/badge/python-3.9%20|%203.10%20|%203.11|%203.12|%203.13-blue.svg)](.github/workflows/test.yml)
+[![python-3.10-3.11-3.12-3.13-3.14](https://img.shields.io/badge/python-3.10%20|%203.11|%203.12|%203.13|%203.14-blue.svg)](.github/workflows/test.yml)
 
 Add [logfmt](https://www.brandur.org/logfmt) structured logging using the stdlib logging module and without changing a single log call.
 
diff --git a/flake.lock b/flake.lock
diff --git a/flake.nix b/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
@@ -21,11 +21,11 @@
       {
         devShells.default = pkgs.mkShell {
           packages = [
-            pkgs.python39
             pkgs.python310
             pkgs.python311
             pkgs.python312
             pkgs.python313
+            pkgs.python314
 
             # external
             pkgs.golang-logfmt-echo
diff --git a/pyproject.toml b/pyproject.toml
@@ -7,7 +7,7 @@ addopts = ["--import-mode=importlib"]
 
 [tool.ruff]
 line-length = 88
-target-version = "py39"
+target-version = "py310"
 
 [tool.ruff.lint]
 select = ["I", "F", "E"]
diff --git a/requirements/pre-commit.txt b/requirements/pre-commit.txt
@@ -1,3 +1,3 @@
-mypy==0.991
-pre-commit==2.20.0
-ruff==0.12.11
+mypy==1.19.1
+pre-commit==4.5.1
+ruff==0.15.5
diff --git a/requirements/publish.txt b/requirements/publish.txt
@@ -1,3 +1,3 @@
 -r ./setuptools.txt
-build==0.7.0
-twine==3.8.0
+build==1.4.0
+twine==6.2.0
diff --git a/requirements/setuptools.txt b/requirements/setuptools.txt
@@ -1 +1 @@
-setuptools==75.8.0
+setuptools==82.0.1
diff --git a/requirements/test.txt b/requirements/test.txt
@@ -1,3 +1,3 @@
 -r ./setuptools.txt
-pytest==7.2.0
-tox==3.27.1
+pytest==9.0.2
+tox==4.49.1
diff --git a/runtimes.txt b/runtimes.txt
@@ -1 +1 @@
-3.9 3.10 3.11 3.12 3.13
+3.10 3.11 3.12 3.13 3.14
diff --git a/setup.cfg b/setup.cfg
@@ -13,7 +13,7 @@ license = MIT
 packages = find:
 package_dir =
   = src
-python_requires = >= 3.9
+python_requires = >= 3.10
 include_package_data = True
 
 [options.packages.find]
diff --git a/src/logfmter/formatter.py b/src/logfmter/formatter.py
@@ -1,15 +1,15 @@
 import logging
 import numbers
 from types import TracebackType
-from typing import Any, Dict, List, Optional, Tuple, Type, cast
+from typing import Any, cast
 
-ExcInfo = Tuple[Type[BaseException], BaseException, TracebackType]
+ExcInfo = tuple[type[BaseException], BaseException, TracebackType]
 
 # Reserved log record attributes cannot be overwritten. They
 # will not be included in the formatted log.
 #
 # https://docs.python.org/3/library/logging.html#logrecord-attributes
-RESERVED: Tuple[str, ...] = (
+RESERVED: tuple[str, ...] = (
     "args",
     "asctime",
     "created",
@@ -169,11 +169,11 @@ def flatten_dict(cls, v: dict, root: str = "") -> dict[str, Any]:
 
     def __init__(
         self,
-        keys: List[str] = ["at"],
-        mapping: Dict[str, str] = {"at": "levelname"},
-        datefmt: Optional[str] = None,
-        defaults: Optional[Dict[str, str]] = None,
-        ignored_keys: Optional[List[str]] = None,
+        keys: list[str] = ["at"],
+        mapping: dict[str, str] = {"at": "levelname"},
+        datefmt: str | None = None,
+        defaults: dict[str, str] | None = None,
+        ignored_keys: list[str] | None = None,
     ):
         super().__init__("%(message)s", datefmt)
         self.keys = [self.normalize_key(key) for key in keys]
diff --git a/tox.ini b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py39,py310,py311,py312,py313
+envlist = py310,py311,py312,py313,py314
 
 [testenv]
 deps = pytest

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-setuptools==75.8.0`
	`1`	`+setuptools==82.0.1`
Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-3.9 3.10 3.11 3.12 3.13`
	`1`	`+3.10 3.11 3.12 3.13 3.14`