Python-Rust-MVP

Minimal Rust-Python example using PyO3.

Setup

make dev
make test
make build

Usage

from mvp import add, Calculator

# Add two numbers
add(5, 10)

# Use Calculator
calc = Calculator(5)
calc.get_value()
calc.add(10)

Development Demo

Here's a quick demonstration of the development workflow with Rust and Python integration:

1. Add a debug print statement to the Rust code:

   diff --git a/src/lib.rs b/src/lib.rs
   --- a/src/lib.rs
   +++ b/src/lib.rs
   @@ -20,6 +20,7 @@ impl Calculator {
        }
   
        fn add(&self, other: i64) -> PyResult<i64> {
   +        println!("🦀 FROM RUST: Calculator adding {} to {}", other, self.value);
            Ok(self.value + other)
        }

2. Rebuild and run tests with stdout capturing disabled:

   make rebuild; uv run py.test -x -s

3. See the Rust println! output in your Python tests:

   ======= test session starts =======
   collected 4 items
   
   tests/test_mvp.py .🦀 FROM RUST: Calculator adding 10 to 10
   ..🦀 FROM RUST: Calculator adding 5 to 10
   🦀 FROM RUST: Calculator adding 20 to 10
   .
   
   ======= 4 passed in 0.01s =======
   

This demonstrates how you can debug Rust code using println! statements that will appear in your Python test output when using pytest's -s flag.

See Also

• nodejs-rust-mvp - A companion project showing Rust integration with Node.js using WebAssembly

License

This project is licensed under the MIT License - see the LICENSE file for details.