build: require Python 3.10 and pytest 9.0.3

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.14"]
+        python-version: ["3.10", "3.14"]
     steps:
       - uses: actions/checkout@v5
       - uses: astral-sh/setup-uv@v6

CLAUDE.md

@@ -16,7 +16,7 @@ Python SDK and `holmanctl` CLI for controlling Holman Bluetooth tap timers (CO30
 
 ## Development
 - Before finishing a change, run `uv run pytest`, `uv run ruff check .`, `uv run ruff format --check .` and `uv run pyrefly check`
-- CI (`.github/workflows/ci.yml`) runs the same checks, with pytest on Python 3.9 and 3.14; keep `requires-python` and that matrix in sync
+- CI (`.github/workflows/ci.yml`) runs the same checks, with pytest on Python 3.10 and 3.14; keep `requires-python` and that matrix in sync
 - Ruff formats the Python snippets in `README.md` too
 - Tests run with `--import-mode=importlib`, so share test helpers as fixtures in `conftest.py`, not by importing modules from `tests/`
 - Tests cover logic only; when adding a `gatt` API call, add it to the fakes in `tests/conftest.py`
@@ -35,12 +35,13 @@ Python SDK and `holmanctl` CLI for controlling Holman Bluetooth tap timers (CO30
 
 ## Python Version
 
-Python 3.9 minimum (`requires-python` in pyproject.toml; ruff and pyrefly also target 3.9). Use the newest syntax 3.9 supports:
+Python 3.10 minimum (`requires-python` in pyproject.toml; ruff and pyrefly also target 3.10). Use the newest syntax 3.10 supports:
+- `X | None` instead of `Optional[X]`
 - `list[str]` instead of `List[str]`
 - `dict[str, Any]` instead of `Dict[str, Any]`
 - `tuple[int, str]` instead of `Tuple[int, str]`
-- `X | None` instead of `Optional[X]` only in annotations, with `from __future__ import annotations` at the top of the module; `|` between types fails at runtime on 3.9 anywhere else (e.g. `isinstance`, aliases)
-- No `match` statements (3.10) or `type X = ...` aliases (3.12); use `if`/`elif` and plain `X = ...` alias assignments (`typing.TypeAlias` is 3.10+, and `typing_extensions` isn't a dependency)
+- `X: TypeAlias = ...` (from `typing`) for type aliases; `type X = ...` is 3.12+
+- Match statements for enum/type dispatch where appropriate
 
 ## Manage packages
 

README.md

@@ -5,7 +5,7 @@ and [BTX1](https://www.holmanindustries.com.au/products/btx1-tap-mounted-smart-v
 The Holman Python SDK for Linux allows you to integrate your Holman(s) into any type of Linux application or script that can execute Python code.
 
 ## Prerequisites
-The Holman SDK requires [Python 3.9+](https://www.python.org) and a recent installation of [BlueZ](http://www.bluez.org/). It is tested to work fine with BlueZ 5.44, slightly older versions should however work, too.
+The Holman SDK requires [Python 3.10+](https://www.python.org) and a recent installation of [BlueZ](http://www.bluez.org/). It is tested to work fine with BlueZ 5.44, slightly older versions should however work, too.
 
 ## Installation
 These instructions assume a Debian-based Linux.

pyproject.toml

@@ -7,7 +7,7 @@ license = "MIT"
 license-files = ["LICENSE.txt"]
 authors = [{ name = "Scott McKenzie", email = "developers@noizyland.net" }]
 keywords = ["holman"]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 # python3-dbus is also required at runtime, but comes from apt (not PyPI).
 dependencies = ["gatt>=0.2.7"]
 
@@ -20,7 +20,7 @@ holmanctl = "holmanctl:main"
 [dependency-groups]
 dev = [
     "pyrefly>=1.3",
-    "pytest>=8",
+    "pytest>=9.0.3",
     "ruff>=0.17",
 ]
 
@@ -39,12 +39,12 @@ testpaths = ["tests"]
 addopts = ["--import-mode=importlib"]
 
 [tool.ruff]
-target-version = "py39"
+target-version = "py310"
 
 [tool.ruff.lint]
 select = ["E", "F", "W", "I", "B", "UP"]
 
 [tool.pyrefly]
 project-includes = ["holman", "holmanctl.py", "tests"]
-python-version = "3.9"
+python-version = "3.10"
 search-path = ["typings"]