[simicd]

Have you by any chance used Pyright? If not, I can highly recommend it. The VS Code extension makes writing Python almost as if it's a statically typed language (+ there is a CLI if you want to check types in CI). The docs are claiming that it's 3-5x faster than mypy - I haven't run performance benchmarks myself, all I can say is that for all my code bases it is very fast after the first cold start.

Comparison to mypy: https://github.com/microsoft/pyright/blob/main/docs/mypy-com...