Use ruff instead of black+flake8

[arkid15r]

Proposed change

Resolves #1670
Switched to ruff. It works great, had to make some modifications though.

Type of change

• New country/market holidays support (thank you!)
• Supported country/market holidays update (calendar discrepancy fix, localization)
• Existing code/documentation/test/process quality improvement (best practice, cleanup, refactoring, optimization)
• Dependency update (version deprecation/upgrade)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (a code change causing existing functionality to break)
• New feature (new python-holidays functionality in general)

Checklist

• I've followed the contributing guidelines
• I've run make pre-commit, it didn't generate any changes
• I've run make test, all tests passed locally

[PPsyrius]

From a quick glance, it seems like you'll need to set a separate max-string-length to 99 again, too, in the pyproject.toml.

[tool.ruff.lint.flake8-errmsg]
max-string-length = 99

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Update: here's the setting I play around with to mimic the existing linter rules we have - interestingly enough, ruff seems to be handling Abugida writing system char count well, unlike flake8 and black.

pyproject.toml

[tool.ruff]
line-length = 99
target-version = "py38"

[tool.ruff.lint]
# Skip Whitespace before ':' (E203).
ignore = ["E203"]

IMO, once rust properly supports isort's multi_line_output we can probably get rid of that one too.

[coveralls]

Pull Request Test Coverage Report for Build 7701360664

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A quick fix for this PR: rebase it; your next report should be accurate.

• 0 of 5 (100.0%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 7689599421:	0.0%
Covered Lines:	10424
Relevant Lines:	10424

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💛 - Coveralls

[arkid15r]

I've added flake8-errmsg suggestion (even though it doesn't seem to make any difference for now). The E203 one is still in preview, I guess it can wait.

[KJhellico]

LGTM! let's ruff it! 🚀

[arkid15r]

All right, I've fixed those " " cases!

Thanks for the thorough review! 👍

[sonarcloud]

Quality Gate passed

The SonarCloud Quality Gate passed, but some issues were introduced.

8 New issues
0 Security Hotspots
No data about Coverage
0.1% Duplication on New Code

See analysis details on SonarCloud