sarj-python-lint

Custom Python lint rules via stdlib ast. Designed for pre-commit. For SQL rules see sarj-sql-lint.

uv tool install sarj-python-lint

Pre-commit

- repo: https://github.com/sarj-ai/standards
  rev: python-v0.2.0
  hooks:
    - id: sarj-no-sequential-await
    - id: sarj-inefficient-string-concat-in-loop
    - id: sarj-prefer-str-enum
    - id: sarj-no-fat-try-blocks
    - id: sarj-pydantic-at-boundaries
    - id: sarj-prefer-class-row
    - id: sarj-prefer-timedelta-for-durations
    - id: sarj-prefer-struct-over-namedtuple
    - id: sarj-no-comment-cruft
    - id: sarj-no-fstring-in-log

Test-quality rules (0.15.0)

Mined from an AST audit of ~7,500 test functions across two production repos. Every one is scoped to test files and carries the false-positive guard that made it shippable; the module docstring for each records the population it was measured against.

    - id: sarj-mock-without-spec                   # SARJ040
    - id: sarj-test-loops-over-literal-cases       # SARJ041
    - id: sarj-parametrize-case-needs-id           # SARJ042
    - id: sarj-zero-assertion-test                 # SARJ043
    - id: sarj-fixture-returns-bare-tuple          # SARJ044
    - id: sarj-kwarg-heavy-construction-in-test    # SARJ045
    - id: sarj-xfail-requires-strict               # SARJ046
    - id: sarj-sleep-with-computed-arg-in-test     # SARJ047

Adopting these against an existing suite is easier through the baseline ratchet than as a big-bang fix — snapshot the current counts, then let them only shrink:

sarj-python-lint check --rule mock-without-spec --update-baseline test-quality-baseline.json python/
sarj-python-lint check --rule mock-without-spec --baseline test-quality-baseline.json python/

CLI

sarj-python-lint check --rule no-sequential-await path/to/file.py
sarj-python-lint list-rules

Diagnostic format is path:line:col: CODE message — Ruff-compatible.

Suppression

Inline # sarj-noqa: SARJ00X — <reason> on the offending line.

Each rule's source under src/sarj_python_lint/rules/ carries its own description and diagnostic message.

Project links

Data verified by PyPI on Jul 26, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

Key dates

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  • Released:
Newer release available (0.77.1)

1 maintainer

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Avatar for nasr-sarj from gravatar.com nasr-sarj

Credits

Author: sarj-ai

GitHub Statistics

Data verified by PyPI on Jul 26, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

MIT License (MIT)

Requires

Python >=3.14

Classifiers

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