my `pyproject.toml` file for ruff linter.

pyproject.toml

# ref: https://beta.ruff.rs/docs/rules/
[tool.ruff]

# defaults to 88 like black
line-length = 100  

# the python version to target, useful when considering code upgrades, defaults to "py310"
target-version = "py310"  

# Linting file type
include = ["*.py", "*.ipynb"]

# Extend the `pyproject.toml` file in the parent directory.
#extend = "../pyproject.toml"

select = [
  "E",   # pycodestyle
  "F",   # pyflakes
  "UP",  # pyupgrade,
  "I",   # isort
  # "B",
  "C4",
  # "N",
  "W",
  "UP",
]

ignore = [
  "F403",
  "F405",
  "E501", # line length violations
  "E402", 
  "W605", # Invalid escape sequence
  "F811", # Redefinition of unused
  "F821", # Undefined name
  ]

# Allow autofix for all enabled rules (when `--fix`) is provided.
fixable = ["A", "B", "C", "D", "E", "F", "I", "UP"]
unfixable = []

# Allow unused variables when underscore-prefixed.
dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"

[per-file-ignores]
# Ignore `E402` (import violations) in all `__init__.py` files, and in `path/to/file.py`.
"__init__.py" = ["E402"]
".pixi/*" = ["E"]
per-file-ignores = {}

[tool.ruff.mccabe]
# Unlike Flake8, default to a complexity level of 10.
max-complexity = 10