My ruff toml configuration with useful defaults and rules

ruff.toml

exclude        = ["docs/*", "*/migrations/*", ".git/*"]
line-length    = 100
indent-width   = 4
target-version = "py311"

[lint]
    select = [
        "E",   # pycodestyle errors
        "W",   # pycodestyle warnings
        "N",   # pep8-naming
        "F",   # flake8 errors
        "S",   # Bandig
        "SIM", # Simplify
        "I",   # isort
        "B",   # bugbear
        "C",   # comprehensions
        "PL",  # pylint error
        "FBT", # Avoid boolean traps
        "UP",  # pyupgrade
        "T10", # Avoid debuggers
        "T20", # Avoid print statements
        "DJ",  # Django
        "ICN", # Import conventions
        "PT",  # Pytest style
        "ERA", # Error return annotations
        "TD",  # Correct use of TODO comments
        "PIE", # Unnecesary code
        "PTH", # Best use of pathlib
        "RET", # Best use of return
        "INP", # Avoid implicit namespace package
    ]

    ignore = [
        "PLR2004", # Ignore use of magic values
        "PLR0915", # Too many statements
        "TD002",   # missing-todo-author
        "TD003",   # missing-todo-link
    ]

    fixable   = ["ALL"]
    unfixable = []

    [lint.per-file-ignores]
        "src/*/settings/*.py"               = ["F403", "F405"]
        "src/**/migrations/0001_initial.py" = ["E501"]
        "**/test_*.py"                      = ["S101"]

    [lint.isort]
        lines-after-imports = 2
        case-sensitive = true
        order-by-type = true
        force-sort-within-sections = true
        combine-as-imports = true
        force-to-top = ["pytest"]
        relative-imports-order = "closest-to-furthest"
        section-order = [
            "future",
            "standard-library",
            "main-library",
            "third-party",
            "first-party",
            "local-folder",
        ]

        [lint.isort.sections]
            "main-library" = ["django", "pydantic"]

[format]
    quote-style = "double"