Schematics

Schematics is a Python library for defining, validating, and transforming data structures. It allows combining types into structures, validating them, and transforming data shapes based on simple descriptions, similar to ORM type systems but without a database layer. The current stable version is 2.1.1. While there isn't a strict, regular release cadence, the library has seen active development and maintenance, offering an intuitive API and comprehensive features for modern Python applications.