trcks - Typesafe railway-oriented programming (ROP).fp - Functional interface for trcks.composition - Types and higher order functions for function composition.monads - Monadic functions for generic types.awaitable - Monadic functions for collections.abc.Awaitable.awaitable_result - Monadic functions for trcks.AwaitableResult.result - Monadic functions for trcks.Result.oop - Object-oriented interface for trcks._typing - Recent features from typing.