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Fix complex zero-padding error priority - #8453
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youknowone merged 2 commits intoAug 4, 2026
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📝 WalkthroughWalkthroughThe change extracts shared validation for complex number padding and alignment. Standard and locale-aware formatting now use the same checks. New tests cover invalid zero-padding and after-sign alignment specifications. ChangesComplex format validation
Estimated code review effort: 2 (Simple) | ~10 minutes Suggested labels: Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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shAn-kor
marked this pull request as ready for review
August 4, 2026 10:08
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What changed
For complex values,
0padding and=alignment are both invalid. When a format spec contains both, CPython raises the zero-padding error first. RustPython returned the alignment error in the regular formatting path, and the locale-awarenpath applied the checks separately.The validation now lives in one helper used by both paths. Specs such as
=08.1fand=08nreport the zero-padding error;=8.1fand=8nstill report the alignment error.The regression tests cover both paths.
Tests
cargo test -p rustpython-common format_complex_cargo run --release -- -m test test_complexcargo clippy -p rustpython-common --all-targets -- -D warningscargo fmt --all -- --checkAI assistance
Codex (GPT-5) assisted with comparing CPython and RustPython behavior, drafting the implementation and regression tests, and writing this PR description.
Summary by CodeRabbit