Add utilities for autoformatting

.flake8

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+# This is our code-style check. We currently allow the following exceptions:
+#   - E731: do not assign a lambda expression, use a def
+#   - W503: line break before binary operator
+#   - E741: do not use variables named 'l', 'O', or 'I'
+#   - E203: whitespace before ':'
+[flake8]
+count = True
+max-line-length = 100
+statistics = True
+ignore = E731,W503,E741,E203

.github/workflows/ci.yml

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+name: CI
+
+on:
+    push:
+        branches:
+            - main
+    pull_request:
+        branches:
+            - main
+
+    # Allows you to run this workflow manually from the Actions tab
+    workflow_dispatch:
+
+jobs:
+
+    Linting:
+        runs-on: ubuntu-latest
+        strategy:
+            matrix:
+                python-version: ['3.8', '3.9', '3.10']
+
+        steps:
+            -   uses: actions/checkout@v2
+            -   name: Set up Python ${{ matrix.python-version }}
+                uses: actions/setup-python@v2
+                with:
+                    python-version: ${{ matrix.python-version }}
+
+            -   uses: actions/cache@v2
+                with:
+                    path: ~/.cache/pip
+                    key: ${{ runner.os }}-pip
+
+            -   name: Install Dependencies
+                run: |
+                    python -m pip install --upgrade pip
+                    pip install -r requirements-dev.txt
+
+            -   name: Lint with isort, black, docformatter, flake8
+                run: |
+                    make lint

.isort.cfg

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+[settings]
+multi_line_output = 3
+include_trailing_comma = True
+force_grid_wrap = 0
+use_parentheses = True
+ensure_newline_before_comments = True
+line_length = 100

.pre-commit-config.yaml

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+repos:
+-   repo: https://github.com/timothycrosley/isort
+    rev: 5.12.0
+    hooks:
+    -   id: isort
+-   repo: https://github.com/psf/black
+    rev: 23.7.0
+    hooks:
+    - id: black
+      language_version: python3
+      additional_dependencies: ['click==8.0.4']
+      exclude: 'scratch/.*'
+
+-   repo: https://github.com/pycqa/flake8
+    rev: 6.0.0
+    hooks:
+    -   id: flake8
+        exclude: 'scratch/.*'

Makefile

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+autoformat:
+	black src/ checkpoints/ models/
+	isort --atomic src/ checkpoints/ models/
+	docformatter --in-place --recursive src checkpoints models
+
+lint:
+	isort -c src/ checkpoints/ models/
+	black src/ checkpoints/ models/ --check
+	flake8 src/ checkpoints/ models/
+
+dev:
+	pip install -r requirements-dev.txt

requirements-dev.txt

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+coverage
+flake8
+isort
+black==23.7.0  # pin black because changes can result in large diffs in PRs
+flake8-bugbear
+flake8-comprehensions
+pre-commit>=2.9.3
+docformatter