optype

Building blocks for precise type hints

GitHub · Installation · Getting Started · API Reference · Type Inference · Changelog

Stop fighting your type checker. Work with it.
optype gives you single-method protocols for every dunder, exact types that reject sneaky subtypes, and typed operators that actually make sense, so you can express what your code really accepts.

Zero dependencies. Works with every modern type checker. Optional NumPy support included. Battle tested.

Visit the documentation at jorenham.github.io/optype.