ruff.toml

line-length = 88
target-version = "py39"

# in addition to ruff's default excludes: skip nested agent worktrees and the
# vendored test-drive library, which contain copies of source not owned here
extend-exclude = [".claude", ".test-drive"]

[lint]
select = [
    "D409", # pydocstyle - section-underline-matches-section-length
    "E",    # pycodestyle error
    "F",    # Pyflakes
    "I001", # isort - unsorted-imports
    "RUF",  # Ruff-specific rules
    "UP",   # Pyupgrade
]
ignore = [
    "E722", # do not use bare `except`
    "E741", # ambiguous variable name
    "F841", # local variable assigned but never used
    "RUF005", # collection literal concatenation
    "RUF012", # mutable class default
    "UP015", # redundant open modes
    "RUF059", # unpacked variable is never used
]

[lint.per-file-ignores]
"doc/**.ipynb" = ["E501"]

[format]
quote-style = "double"
indent-style = "space"
skip-magic-trailing-comma = false
line-ending = "lf"