Writing Python Extensions in Rust Using PyO3

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To expose this code from Rust to Python, there are a couple of different approaches you could take. The simplest approach is to expose a C ABI from your Rust program.

The big problem with this approach is that this limits us to a C ABI. Both Rust and Python are safe languages and requiring going to a lower level C library interface adds a lot of extra complexity and potential for errors.

The PyO3 project aims to let you have full access to Python programs from Rust. This includes both embedding Python in Rust programs and creating Rust extensions that can be called from Python.