Yes, mypy is terrific, and has changed the way I write Python programs. Taking this gradual typing tool a step further, you can run your tests with the typegua

Yes, mypy is terrific, and has changed the way I write Python programs. Taking this gradual typing tool a step further, you can run your tests with the typeguard plugin for pytest, which will dynamically check the types of most values, pointing out places where your types are a lie. https://typeguard.readthedocs.io/en/latest/userguide.html#using-the-pytest-plugin https://typeguard.readthedocs.io/en/latest/userguide.html#us...