pyproject.toml

[project]

classifiers = [
    "Development Status :: 5 - Production/Stable",
    "Intended Audience :: Science/Research",
    "License :: OSI Approved :: MIT License",
    "Natural Language :: English",
    "Operating System :: MacOS",
    "Operating System :: Microsoft :: Windows",
    "Operating System :: POSIX",
    "Operating System :: Unix",
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.9",
    "Programming Language :: Python :: 3.10",
    "Programming Language :: Python :: 3.11",
    "Programming Language :: Python :: 3.12",
    "Programming Language :: Python :: 3.13",
    "Topic :: Scientific/Engineering :: Artificial Intelligence"
]
dependencies = [
    "numpy>=1.17.0",
    "scipy"
]
description = "LightGBM Python-package"
license = {file = "LICENSE"}
maintainers = [
  {name = "Yu Shi", email = "yushi@microsoft.com"}
]
name = "lightgbm"
readme = "README.rst"
requires-python = ">=3.9"
version = "4.6.0.99"

[project.optional-dependencies]
arrow = [
    "cffi>=1.15.1",
    "pyarrow>=6.0.1"
]
dask = [
    "dask[array,dataframe,distributed]>=2.0.0",
    "pandas>=0.24.0"
]
pandas = [
    "pandas>=0.24.0"
]
plotting = [
    "graphviz",
    "matplotlib"
]
scikit-learn = [
    "scikit-learn>=0.24.2"
]

[project.urls]
homepage = "https://github.com/microsoft/LightGBM"
documentation = "https://lightgbm.readthedocs.io/en/latest/"
repository = "https://github.com/microsoft/LightGBM.git"
changelog = "https://github.com/microsoft/LightGBM/releases"

# start:build-system
[build-system]

requires = ["scikit-build-core>=0.10.1"]
build-backend = "scikit_build_core.build"

# based on https://github.com/scikit-build/scikit-build-core#configuration
[tool.scikit-build]
ninja.version = ">=1.11"
ninja.make-fallback = true
build.verbose = false
build.targets = ["_lightgbm"]
install.strip = true
logging.level = "INFO"
sdist.reproducible = true
wheel.py-api = "py3"
experimental = false
strict-config = false
minimum-version = "build-system.requires"

[tool.scikit-build.cmake]
version = "CMakeLists.txt"
build-type = "Release"

[tool.scikit-build.cmake.define]
__BUILD_FOR_PYTHON = "ON"

# end:build-system

[tool.mypy]
disallow_untyped_defs = true
exclude = 'build/*|compile/*|docs/*|examples/*|external_libs/*|lightgbm-python/*|tests/*'
ignore_missing_imports = true

[tool.ruff]
exclude = [
    "build",
    "compile",
    "external_libs",
    "lightgbm-python",
]
line-length = 120

# this should be set to the oldest version of python LightGBM supports
target-version = "py39"

[tool.ruff.format]
docstring-code-format = false
exclude = [
    "build/*.py",
    "compile/*.py",
    "external_libs/*.py",
    "lightgbm-python/*.py",
]
indent-style = "space"
quote-style = "double"
skip-magic-trailing-comma = false

[tool.ruff.lint]
ignore = [
    # (pydocstyle) Missing docstring in magic method
    "D105",
    # (pycodestyle) Line too long
    "E501",
    # (pylint) Too many branches
    "PLR0912",
    # (pylint) Too many arguments in function definition
    "PLR0913",
    # (pylint) Too many statements
    "PLR0915",
    # (pylint) Consider merging multiple comparisons
    "PLR1714",
    # (pylint) Magic value used in comparison
    "PLR2004",
    # (pylint) for loop variable overwritten by assignment target
    "PLW2901",
    # (pylint) use 'elif' instead of 'else' then 'if', to reduce indentation
    "PLR5501",
    # (flake8-pytest-style) `scope='function'` is implied in `@pytest.fixture()`
    "PT003"
]
select = [
    # flake8-bugbear
    "B",
    # flake8-comprehensions
    "C4",
    # pydocstyle
    "D",
    # pycodestyle (errors)
    "E",
    # pyflakes
    "F",
    # isort
    "I",
    # NumPy-specific rules
    "NPY",
    # pylint
    "PL",
    # flake8-pytest-style
    "PT",
    # flake8-return: unnecessary assignment before return
    "RET504",
    # flake8-return: superfluous-else-raise
    "RET506",
    # flake8-simplify: use dict.get() instead of an if-else block
    "SIM401",
    # flake8-print
    "T",
    # pycodestyle (warnings)
    "W",
]

[tool.ruff.lint.flake8-pytest-style]
raises-extend-require-match-for = ["*Exception", "*Error"]

[tool.ruff.lint.per-file-ignores]
"docs/conf.py" = [
    # (flake8-bugbear) raise exceptions with "raise ... from err"
    "B904",
    # (flake8-print) flake8-print
    "T"
]
"examples/*" = [
    # pydocstyle
    "D",
    # flake8-print
    "T"
]
"python-package/lightgbm/basic.py" = [
    # (pylint) Using the global statement is discouraged
    "PLW0603"
]
"tests/*" = [
    # (flake8-bugbear) Found useless expression
    "B018",
    # pydocstyle
    "D",
    # flake8-print
    "T"
]

[tool.ruff.lint.pydocstyle]
convention = "numpy"

[tool.ruff.lint.isort]
known-first-party = ["lightgbm"]