ijl / orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy

datamodel-code-generator / datamodel-code-generator

Generate Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON/YAML/CSV.

ramnes / notion-sdk-py

Notion API client SDK, rewritten in Python! (sync + async)

litestar-org / polyfactory

Simple and powerful factories for mock data generation

reagento / adaptix

An extremely flexible and configurable data model conversion library.

python-attrs / cattrs

Composable custom class converters for attrs, dataclasses and friends.

Fatal1ty / mashumaro

High-performance serialization without replacing your data model

yukinarit / pyserde

Yet another serialization library on top of dataclasses, inspired by serde-rs.