strsimpy-rust (Rust mirror of luozhouyang/python-string-similarity)

Stage-1 Rust mirror of luozhouyang/python-string-similarity (MIT, original by ZhouYang Luo). Behavior-identical port of the strsimpy package exposed as the strsimpy._strsimpy extension module via PyO3, with a thin strsimpy/__init__.py re-export shim preserving the original public API (Levenshtein, Damerau, JaroWinkler, Cosine, SIFT4, ...).

Layout (publishable)

One implementation, two distributions:

• strsimpy-core/ — reusable pure-Rust core crate strsimpy-rust-core (crates.io). No Python dependency: rlib, cargo test clean, miri-clean. Rust consumers depend on this crate directly.
• src/lib.rs — thin PyO3 binding crate strsimpy-rust calling that same core. Ships on PyPI as distribution strsimpy-rust; the import name is unchanged (import strsimpy), so users swap the install with zero code changes: pip install strsimpy-rust instead of pip install strsimpy.
• strsimpy/ — Python shim (__init__.py).
• release.toml — release configuration (names, version, platforms, Python versions, publishing repo + workflow identity, license, upstream attribution). Read by rustsmith release-prep; see docs/RELEASE.md.

No redesign: every algorithm replicates the original op-for-op over chars (never bytes) with identical accumulation order, so float outputs are bit-exact.

Install

pip install strsimpy-rust        # Python (import strsimpy)
cargo add strsimpy-rust-core     # Rust

Release

Publishing is a manual step after review; rustsmith never pushes. Prepare and verify everything locally, then follow the generated setup instructions:

rustsmith release-prep --project mirror/strsimpy --fork <fork> --opt <opt> \
  --recon-out <recon> --out <dist>

See docs/RELEASE.md (releasing converted projects) and the generated TRUSTED_PUBLISHING_SETUP.md in the output directory.

Measured performance

No accepted optimizations yet (mirror baseline); re-run release-prep after run --stage optimize merges winners. Artifact hashes are intentionally absent here; see release-manifest.json.