Show HN: Katharos Functional programming and CSP-style concurrency for Python
Summary
Katharos is a Python library that brings functional programming concepts (algebraic abstractions like Functor, Applicative, Monad, Semigroup, Monoid) together with CSP-style message-passing concurrency. It emphasizes composable, type-safe values for errors, effects, and inter-thread communication, with do-notation support and a Go-style concurrency model built on Python. The project is presented with installation details and examples demonstrating functional patterns and concurrent workflows.