Ruff¶

https://github.com/astral-sh/ruff

Ruff (flake8, PyLint) is a Python linting tool that checks your Python codebase for errors, styling issues and complexity.

caveat: avoid ruff to automatically fix your code - auto fix without review can be questionable or wrong.

disable E741¶

[tool.ruff.lint]
ignore = ["E741"] # ambiguous-variable-name: l (lowercase L), O (uppercase O), or I (uppercase I)

config file¶

[tool.ruff]
line-length = 88
target-version = "py310"

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

# Enable the pycodestyle (`E`) and Pyflakes (`F`) rules by default
# Unlike Flake8, Ruff doesn't enable pycodestyle warnings (`W`) or
# McCabe complexity (`C901`) by default.
select = ["E", "F"]
ignore = [
  "E402",  # Module level import not at top of file
]

# Allow autofix for all enabled rules (when `--fix`) is provided
fixable = ["ALL"]
unfixable = []

double quotes¶

black forces double quotes, no option to choose
ruff is faster, together with linter, and >99.9% black-compatible style
use ruff is possible Shift + Alt + F

In settings.json make the changes:

    "[python]": {
        "editor.defaultFormatter": "charliermarsh.ruff" //"ms-python.black-formatter"
    },

Settings in pyproject.toml

[tool.ruff.lint]
ignore = ["E741"] # ambiguous-variable-name: l (lowercase L), O (uppercase O), or I (uppercase I)

[tool.ruff.format]
quote-style = "single"