Senior LevelPython

How do you build memory-safe, ultra-fast Python native extension modules in Rust using PyO3 and compile them with Maturin?

Q: How do you build memory-safe, ultra-fast Python native extension modules in Rust using PyO3 and compile them with Maturin?

**PyO3** allows writing memory-safe, C-speed Python native extension modules in **Rust**: ### Workflow: 1. Annotate Rust functions with '#[pyfunction]' and modules with '#[pymodule]'. 2. **'maturin develop'**: Compiles Rust code into standard binary C-extension wheels ('.so' on Linux, '.pyd' on Windows) importable directly into Python with zero runtime overhead! Key Takeaway: Use PyO3 and Maturin to write memory-safe Rust extension modules executing at native C speeds in Python.

❓ Interview Prompt: Explain `PyO3` Rust crate, `#[pyfunction]`, `#[pymodule]`, compiling `.so`/`.pyd` native extensions via `Maturin`, and C-API bindings.

PyO3 allows writing memory-safe, C-speed Python native extension modules in Rust:

Workflow:

Annotate Rust functions with '#[pyfunction]' and modules with '#[pymodule]'.

'maturin develop': Compiles Rust code into standard binary C-extension wheels ('.so' on Linux, '.pyd' on Windows) importable directly into Python with zero runtime overhead!

Code Implementation Example

rust

// Rust extension using PyO3 crate
use pyo3::prelude::*;

#[pyfunction]
fn sum_numbers(a: i64, b: i64) -> PyResult<i64> {
    Ok(a + b)
}

#[pymodule]
fn my_rust_ext(_py: Python, m: &PyModule) -> PyResult<()> {
    m.add_function(wrap_pyfunction!(sum_numbers, m)?)?;
    Ok(())
}

💡Writing native Python extension modules in Rust using PyO3.

🎯 Interview Key Takeaway

Use PyO3 and Maturin to write memory-safe Rust extension modules executing at native C speeds in Python.

#PyO3#Rust#Maturin#C Extensions#Senior

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