PyO3 (Rust-Python Bindings)

Scope

• Module initialization and class export.
• GIL management, free-threading (Python 3.13+), and allow_threads.
• Buffer protocol and zero-copy data transfer.
• Async bridging with pyo3-async-runtimes.
• Maturin build configuration and wheel distribution.
• Type stubs (.pyi) for IDE support.

Module Setup

Cargo.toml

[lib]
name = "_core"
crate-type = ["cdylib", "rlib"]  # cdylib for Python, rlib for Rust tests