A Python module is an external class or set of functions that exist outside the main file of your program. This can be something that you built yourself, or it can be provided by the community.

You’ll learn how to set up a Python project with a PyO3 create, how to expose Rust functions as a Python module, and how to create Python objects like classes and exceptions in Rust.

Khan Academy. Creating modules | Intro to CS - Python | Khan Academy. Posted: November 9, 2024 | Last updated: March 26, 2025 ...

Modern Python codebases deserve to have test suites, and the current tooling for testing makes creating test suites easier than ever. Python has its own built-in testing framework, unittest .