glom

glom is a declarative object transformer and formatter for Python, designed to simplify working with nested data structures. It provides path-based access, powerful data transformation using Pythonic specifications, meaningful error messages, and built-in debugging features. The library follows a CalVer versioning scheme (YY.MM.MICRO) and is actively maintained, with version 25.12.0 being a recent release that includes maintenance updates and test fixes for newer Python versions.