ruff.toml

# Shared Ruff configuration for every Python file in this repository.
# Ruff (check + format) replaces the previous black + [tool.isort] + ancient
# ruff 0.0.239 combination.
target-version = "py310"

# The benchmark notebooks were never covered by the old `black` (which was
# configured for `types: [python]`) or by ruff 0.0.239 (no notebook support),
# and they are scratch/benchmarking material. Keep them out of scope.
extend-exclude = ["*.ipynb"]

[lint]
# The #67 tooling swap deliberately kept the historical `["E", "F", "I"]` so it
# would not turn into a codebase-wide lint sweep. #83 widens it; the sweep is
# its own commit.
#
# Not selected, on purpose:
#   * `PT`   -- pytest-raises-too-broad wants an added `match=` on every
#               `pytest.raises`, which is a test-content change, not a lint fix.
#   * `FURB` -- preview-adjacent and mostly stylistic (`Decimal("1")` vs
#               `Decimal(1)`); churn without a correctness payoff here.
#   * `ANN`/`D` -- this repo does not annotate or docstring its test helpers,
#               and forcing it would swamp any real finding.
select = [
    "E",    # pycodestyle errors
    "W",    # pycodestyle warnings
    "F",    # Pyflakes
    "I",    # isort
    "UP",   # pyupgrade -- the floor is Python 3.10
    "B",    # flake8-bugbear
    "SIM",  # flake8-simplify
    "C4",   # flake8-comprehensions
    "PIE",  # flake8-pie
    "PERF", # perflint
    "RUF",  # ruff-specific
]

[lint.isort]
# `target-version = "py310"` is the *packages'* floor, and it makes ruff classify
# `tomllib` (stdlib since 3.11) as a third-party import. The helpers in `scripts/`
# are dev tooling that runs under CI's `python3`, not under that floor.
extra-standard-library = ["tomllib"]