pyproject.toml

# Ruff linter configuration — replaces flake8 (see issue #466)
# NOTE: Build config remains in setup.py / setup.cfg (versioneer constraint).

[tool.ruff]
target-version = "py38"          # match setup.py python_requires
line-length = 127                # match previous flake8 --max-line-length

exclude = [
    "graphistry/graph_vector_pb2.py",
    "graphistry/_version.py",
    "versioneer.py",
]

[tool.ruff.lint]
# --- Rule selection --------------------------------------------------------
# Enable the same rule families flake8 checked:
#   E/W = pycodestyle   F = pyflakes   C90 = mccabe
select = ["E", "W", "F", "C90"]

# --- Ignored rules ---------------------------------------------------------
# Carried over from the old flake8 --ignore list.
#
# Codes NOT ported (no ruff equivalents):
#   E121, E122, E123, E124, E125, E128, E131 — indentation/continuation
#       rules that ruff does not implement (ruff delegates formatting to
#       ruff-format or black).
#   E144 — non-standard flake8 code, no ruff equivalent.
#   W503 — line break before binary operator; PEP 8 reversed its stance
#       and ruff does not enforce this.
ignore = [
    # --- mccabe ---------------------------
    "C901",    # function too complex

    # --- whitespace (preview) -------------
    "E201",    # whitespace after '('
    "E202",    # whitespace before ')'
    "E203",    # whitespace before ':' / ',' / ';'
    "E231",    # missing whitespace after ',' / ';' / ':'
    "E251",    # unexpected spaces around keyword / parameter default

    # --- comments (preview) ---------------
    "E265",    # block comment should start with '# '

    # --- blank lines (preview) ------------
    "E301",    # expected 1 blank line before a nested definition
    "E302",    # expected 2 blank lines before a function / class definition
    "E303",    # too many blank lines

    # --- imports --------------------------
    "E401",    # multiple imports on one line
    "E402",    # module import not at top of file (conditional imports)
    "F401",    # module imported but unused

    # --- line length ----------------------
    "E501",    # line too long (handled by line-length setting as backstop)

    # --- comparison style -----------------
    # Ruff finds these but flake8 did not flag them; ignore for parity.
    # Consider enabling in a follow-up (95 auto-fixable occurrences).
    "E713",    # test for membership should be 'not in x'
    "E714",    # test for object identity should be 'is not'

    # --- naming ---------------------------
    "E741",    # ambiguous variable name (e.g. 'l')

    # --- bare except ----------------------
    "E722",    # do not use bare 'except'

    # --- trailing whitespace --------------
    "W291",    # trailing whitespace
    "W293",    # whitespace before a comment
]

[tool.ruff.lint.mccabe]
max-complexity = 10              # match previous flake8 --max-complexity