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Combining Python and Rust with P3 to Build Performant Modules using Maturin

Foreign Function Interface (FFI) bridging allows a memory-safe, statically-typed systems language to expose native functionality to a dynamically-typed, interpreted language, so that performance- and safety-critical computation can be offloaded to the systems language while the interpreted language retains its ease of use. This requires a binding layer that maps constructs across languages with differing paradigms and error-handling models—e.g., mapping structs (in a language without classes) to classes, and mapping the systems language's Result-based error handling to the interpreted language's exception-based error handling—via explicit annotations that mark which functions, types, and methods are exposed across the boundary. A build/packaging tool compiles the native code and packages it to conform to the interpreted language's module and distribution system, enabling the resulting artifact to be imported like any native module and published to a package index.