Lodum, a Python Serializer/Deserializer (a.k.a. Load/Dump) Library

Impressive engineering choices — bytecode/AST generation for ~64% faster dumps and explicit Pyodide/WASM support show someone wrestled real performance and portability problems. It bundles one API across JSON, YAML, TOML, MsgPack/CBOR/BSON and adds native numpy/pandas handling plus basic validators and schema output. Still, it lives in a crowded Python serialization space (pickle, orjson, pydantic/serde alternatives), so adoption will hinge on ecosystem compatibility and convincing users to switch.