Polypy

Polypy is a Python library designed for working with polymorphic data structures. It allows developers to define data models that can hold values of different types, offering flexibility in how data is represented and processed. The core concept behind Polypy is to enable a single variable or field to accept and manage data that might be, for instance, an integer, a string, a list, or a custom object, without explicit type casting at the definition level.

The library provides mechanisms for defining these polymorphic types and for validating incoming data against the defined possibilities. This can be particularly useful in scenarios such as parsing configuration files, handling API responses with varying data formats, or building dynamic data processing pipelines. Polypy aims to simplify the management of such diverse data by providing a structured and consistent approach.

Key features of Polypy include the ability to specify a set of allowed types for a given field, automatic type coercion where appropriate, and error handling for data that does not conform to the defined polymorphic rules. It also supports nested polymorphic structures, allowing for complex and deeply integrated data models. By abstracting away some of the complexities of dynamic typing, Polypy seeks to improve code readability and reduce the potential for runtime errors related to unexpected data types.