[qubidt]

Having run into these issues with Pydantic, we've been using Mashumaro[1], which, while not having all the bells and whistles of Pydantic, has served us pretty well.

1: https://github.com/Fatal1ty/mashumaro

[nerdponx]

Other options:

https://pypi.org/project/desert/

https://pypi.org/project/dataclass-factory/

[uranusjr]

Wait so there is a Marshmallow and a Mashumaro which is the romanisation of the Japanese translation of marshmallow!? Talking about giving projects confusing names…

[Attummm]

Isn't part of validation making sure you get the expected data in the expected format?