marshmallow-polyfield

marshmallow-polyfield is an unofficial extension to Marshmallow (version 3+) that enables defining polymorphic fields within your schemas. It allows for serialization and deserialization of objects that can have different underlying types, mapping them to appropriate Marshmallow schemas based on a discriminator field. The current version is 5.11, and it maintains an active release cadence to ensure compatibility with recent Marshmallow versions.