Make your functions return something meaningful, typed, and safe!
Features

Brings functional programming to Python land

Provides a bunch of primitives to write declarative business logic

Enforces better architecture

Fully typed with annotations and checked with mypy, PEP561 compatible

Adds emulated Higher Kinded Types support

Provides type-safe interfaces to create your own data-types with enforced laws

Has a bunch of helpers for better composition

Pythonic and pleasant to write and to read 🐍

Support functions and coroutines, framework agnostic

Easy to start: has lots of docs, tests, and tutorials