Updates for Python 3.9 support

This updates various supporting files for Python 3.9 support.

Author: dlech

.github/workflows/test.yml

@@ -5,14 +5,15 @@ on: [push, pull_request]
 jobs:
   test:
     runs-on: ubuntu-20.04
-    env:
-      READTHEDOCS: "True"  # work around bleak import error
+    strategy:
+      matrix:
+        python-version: [ '3.8', '3.9' ]
     steps:
       - uses: actions/checkout@v2
       - run: pipx install poetry
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.8'
+          python-version: ${{ matrix.python-version }}
       - run: poetry install
       - run: poetry run pytest
       - run: poetry run flake8 --show-source

CONTRIBUTING.md

@@ -11,7 +11,7 @@ to use, you are welcome to use them, but we can't help you if things go wrong.
 ### Prerequisites
 
 - [Git](https://git-scm.com/) (or install `git` with your favorite package manager)
-- [Python 3.8](https://python.org) (see [README](./README.md) for more info)
+- [Python](https://python.org) (see [README](./README.md) for more info)
 - [Poetry](https://python-poetry.org/)
 - [VS Code](https://code.visualstudio.com/)
 

README.md

@@ -14,8 +14,7 @@ operations from within a Python script.
 
 ### Python Runtime
 
-We currently only support Python 3.8.x. (Newer versions are not supported yet
-for technical reasons.)
+`pybricksdev` requires Python 3.8 or higher.
 
 - For Windows, use the [official Python installer][py-dl] or the [Windows Store][py38-win].
 - For Mac, use the [official Python installer][py-dl] or Homebrew (`brew install [email protected]`).

README.notebooks.md

@@ -2,7 +2,7 @@
 
 Here are some tips on using `pybricksdev` with Jupyter notebooks.
 
-- Create a virtual environment for hosting the kernel (remember `pybricksdev` is Python 3.8 only!).
+- Create a virtual environment for hosting the kernel.
 - Use `apt`, `brew`, `pipx`, etc. and not `pip` for installing notebook server globally.
 - Required packages for kernel: `pybricksdev`, `ipykernel`, `ipywidgets`
 - Recommended packages for kernel: `matplotlib`