Added pre-commit for code quality.

.flake8

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+[flake8]
+ignore =
+    W503
+    E203
+    E501
+

.github/workflows/run-precommit.yml

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+name: Run pre-commit hooks
+on:
+  push:
+    paths:
+      - '**.py'
+  workflow_dispatch:
+
+jobs:
+  code-quality:
+    runs-on: ubuntu-latest
+    steps:
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/[email protected]
+        with:
+          python-version: '3.8'
+
+      - name: Install dev requirements
+        run: pip install -r dev-requirements.txt
+
+      - name: Run pre-commit hooks
+        run: pre-commit run --all-files --show-diff-on-failure
+

.pre-commit-config.yaml

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+repos:
+  - repo: https://github.com/psf/black
+    rev: 22.12.0
+    hooks:
+      - id: black
+
+  - repo: https://github.com/pycqa/isort
+    rev: 5.12.0
+    hooks:
+      - id: isort
+        args: [ "--profile", "black" ]
+
+  - repo: https://github.com/pycqa/flake8
+    rev: 6.0.0
+    hooks:
+      - id: flake8
+
+  - repo: local
+    hooks:
+      - id: no_commit
+        name: Check for NO_COMMIT marker
+        entry: bash -c "git diff --cached -U0 | (! grep NO_COMMIT)"
+        language: system

dev-requirements.txt

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+pre-commit
+