Update `csv.py` from 3.13.5 by ShaharNaveh · Pull Request #6035 · RustPython/RustPython

ShaharNaveh

Walkthrough

The code updates the IterNext implementation for the Reader struct in csv.rs by replacing a manual match on the iterator result with the raise_if_stop! macro, streamlining the handling of StopIteration and value extraction. No changes to public entity declarations are made.

Changes

File(s)	Change Summary
stdlib/src/csv.rs	Replaced explicit match on iterator result with the `raise_if_stop!` macro in the `IterNext` implementation for `Reader`.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A macro hops in, so spry and neat,
To handle StopIteration’s feat.
Less matching now, more time to play,
The code grows lighter every day.
With every hop, our logic’s tight—
A rabbit’s touch makes code just right! 🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 9499d39 and d8aa0f3.

⛔ Files ignored due to path filters (2)

Lib/csv.py is excluded by !Lib/**
Lib/test/test_csv.py is excluded by !Lib/**

📒 Files selected for processing (1)

stdlib/src/csv.rs (2 hunks)

🧰 Additional context used

📓 Path-based instructions (1)

**/*.rs

📄 CodeRabbit Inference Engine (.github/copilot-instructions.md)

**/*.rs: Follow the default rustfmt code style (cargo fmt to format)
Always run clippy to lint code (cargo clippy) before completing tasks. Fix any warnings or lints that are introduced by your changes
Follow Rust best practices for error handling and memory management
Use the macro system (pyclass, pymodule, pyfunction, etc.) when implementing Python functionality in Rust

Files:

stdlib/src/csv.rs

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GitHub Check: Run snippets and cpython tests (windows-latest)

🔇 Additional comments (2)

stdlib/src/csv.rs (2)

11-13: ✓ Cleanly imports the helper macro

Adding raise_if_stop to the use list is correct and required for the macro invocation below.
No further action needed.

926-933: Macro use simplifies control-flow without altering behaviour

Replacing the explicit match with raise_if_stop! keeps the semantics (unwrap Return, propagate StopIteration) while trimming boilerplate. The surrounding down-cast and error path remain intact.

Good upgrade—nothing to fix.

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