ruff.toml

line-length = 120
target-version = "py310"

[lint]
select = ["F", "E", "W", "I", "UP", "B", "SIM", "RUF", "C4", "PIE", "T20"]
ignore = [
    "E501",     # line too long (handled by formatter)
    "E101",     # mixed tabs/spaces in multiline strings — false positives
    "E711",     # comparison to None — intentional in SQL generation (== None → IS NULL)
    "E712",     # comparison to True/False — intentional in SQL generation
    "E722",     # bare except — existing codebase uses intentionally in DB drivers
    "E741",     # ambiguous variable name — false positives on math code
    "B024",     # abstract class without abstract methods — attrs classes
    "B905",     # zip without strict= — too invasive for initial config
    "C408",     # unnecessary dict() call — low priority style
    "C414",     # unnecessary list() in sorted() — low priority
    "C416",     # unnecessary dict comprehension — low priority
    "PIE794",   # duplicate class field — attrs pattern
    "RUF003",   # ambiguous unicode — false positive on comments
    "RUF005",   # collection literal concatenation — too noisy for existing codebase
    "RUF007",   # prefer itertools.pairwise — requires Python 3.10+ and different semantics
    "RUF008",   # mutable default in dataclass — false positives on attrs fields
    "RUF012",   # mutable class attrs — false positives on attrs/dataclass fields
    "RUF013",   # implicit Optional — conflicts with existing codebase style
    "RUF017",   # quadratic list summation — low priority
    "SIM102",   # collapsible if — often less readable when collapsed
    "SIM105",   # use contextlib.suppress — style preference
    "SIM108",   # ternary — often less readable
    "UP031",    # percent format — too noisy, low value
]

[lint.isort]
known-first-party = ["data_diff"]

[lint.per-file-ignores]
"tests/*" = ["T20", "F405", "F403", "B904", "B007", "B017", "F821", "F841", "SIM117"]
"dev/*" = ["T20"]
"data_diff/__main__.py" = ["T20"]
"data_diff/dbt.py" = ["T20"]
"data_diff/utils.py" = ["T20"]
"data_diff/databases/*" = ["B904"]
"data_diff/queries/api.py" = ["F405", "F403"]