chore: update Python version requirements and dependencies to support Python 3.10+

Author: zoola969

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - uses: actions/checkout@v4

.gitignore

@@ -85,7 +85,7 @@ ipython_config.py
 # pyenv
 #   For a library or package, you might want to ignore these files since the code is
 #   intended to run in multiple environments; otherwise, check them in:
-#.python-version
+.python-version
 
 # pipenv
 #   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.

.pre-commit-config.yaml

@@ -3,7 +3,7 @@ ci:
   autofix_prs: false
   autoupdate_commit_msg: '[pre-commit.ci] pre-commit autoupdate'
 default_language_version:
-  python: python3.9
+  python: python3.10
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0

.python-version

@@ -6,7 +6,7 @@ This page combines our previous Development Guide and contribution guidelines.
 
 ## Local environment
 
-- Python 3.9+
+- Python 3.10+
 - Optional tools for docs: mkdocs, mkdocs-material, mkdocstrings[python]
 
 Install the docs toolchain:
@@ -31,7 +31,7 @@ pytest -q
 
 ## Linting and typing
 
-- Use Python 3.9+ and run linters before committing
+- Use Python 3.10+ and run linters before committing
 - Follow typing and docstring conventions used in the project
 
 ## Opening issues and PRs

docs/contributing.md

@@ -1,6 +1,6 @@
 # Installation
 
-Supported Python versions: 3.9 – 3.13
+Supported Python versions: 3.10 – 3.14
 
 Install from PyPI:
 

docs/installation.md

@@ -33,7 +33,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
-    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python",
     "Topic :: Software Development :: Libraries",
     "Typing :: Typed",
@@ -48,7 +48,7 @@ keywords = ["cache", "lru", "lru-cache", "time-to-live", "ttl"]
 license = {file = "LICENSE"}
 name = "cachium"
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 [project.urls]
 Changelog = "https://github.com/zoola969/cachium/CHANGELOG.md"
@@ -60,7 +60,6 @@ Repository = "https://github.com/zoola969/cachium.git"
 [tool.black]
 color = true
 line-length = 120
-target-version = ['py39']
 
 [tool.coverage.report]
 exclude_also = [