Switch to ruff, bump Python version in GitHub Actions to 3.11.

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8]
+        python-version: [3.11]
 
     steps:
     - uses: actions/checkout@v2
@@ -19,11 +19,9 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt-get install coinor-cbc
-        python -m pip install --upgrade pip
-        pip install flake8==3.8.3 black==19.10b0 pytest==5.4.3
-        pip install -e .
+        python -m pip install --upgrade pip poetry
+        poetry install --with dev
     - name: Test with pytest
       run: |
-        black --check ./slotmachine ./tests
-        flake8
-        pytest
+        poetry run ruff check ./
+        poetry run pytest

pyproject.toml

@@ -12,6 +12,13 @@ pulp = "2.1"
 python-dateutil = ">=2.5.3"
 
 
+[tool.poetry.group.dev.dependencies]
+ruff = "^0.2.0"
+pytest = "^8.0.0"
+
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
+
+[tool.ruff]
+ignore = ["E741"]

slotmachine/__init__.py

@@ -2,7 +2,7 @@
 from datetime import datetime
 from dateutil import parser, relativedelta
 from dataclasses import dataclass, field
-from typing import Iterable, NewType, cast
+from typing import NewType, cast
 import json
 import time
 import logging