No real issues other than our own lack of experience with PyO3. I'd say the biggest gamble is spending the time to get it set up. Once we got it running, it was

No real issues other than our own lack of experience with PyO3. I'd say the biggest gamble is spending the time to get it set up. Once we got it running, it was smooth sailing. We're calling Rust from Python. Haven't tried it the other way around. Our use case was helped by the fact that we are just passing a String into Rust and letting Rust do all the heavy lifting. There's minimal back-and-forth. I liked how PyO3 managed panics (they're just normal exceptions that can be caught on the Python side). I wasn't the one dealing with Maturin, but it seemed reasonable to get started with. I never enjoy introducing more tools into a build system, but this was relatively painless. If I recall correctly, the bindings themselves are only like… thirty lines of code.