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Using Rust from Python

guide/src/rust-from-python.md

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Using Rust from Python

This chapter of the guide is dedicated to explaining how to wrap Rust code into Python objects.

PyO3 uses Rust's "procedural macros" to provide a powerful yet simple API to denote what Rust code should map into Python objects.

PyO3 can create three types of Python objects:

  • Python modules, via the #[pymodule] macro
  • Python functions, via the #[pyfunction] macro
  • Python classes, via the #[pyclass] macro (plus #[pymethods] to define methods for those classes)

The following subchapters go through each of these in turn.