Data Format Python Packages

pynwb

A Python API for working with Neurodata stored in the NWB Format

geoh5py

Python API for geoh5, an open file format for geoscientific data.

toonify

Toonify: Compact data format reducing LLM token usage by 30-60%

toon-llm

Token-Oriented Object Notation (TOON) is an LLM-optimized data serialization format implemented in Python.

chepy

Chepy is a python lib/cli equivalent of the awesome CyberChef tool.

hissbytenotation

Library to make it easy to use python literal syntax as a data format

dems

:truck: DESHIMA Measurement Set

agent-first-data

Agent-First Data (AFD) — suffix-driven output formatting and protocol templates for AI agents

weldx

The welding data exchange format

concrete

Python modules and scripts for working with Concrete

flask-responsebuilder

Implementations of flask response in many format notation

spss-converter

A simple utility that converts SPSS data to / from Pandas DataFrames, CSV, Excel, JSON, YAML, and dict.

demerge

:truck: DESHIMA merge code for observed datasets

pst-format

Plain Structured Text (PST)

mira-omf

API Library for Open Mining Format

tsdf

A package to read, modify and write TSDF data in Python.

las-geoh5

Import/Export LAS files to/from GEOH5 format for geoscientific data

ensight-reader

A pure Python reader for the EnSight Gold format

ison-py

🔥 🔥 Alternative to JSON 🔥 🔥

langflow-toon

🎒 Token-Oriented Object Notation (TOON) – Compact, human-readable, schema-aware JSON for LLM prompts. Spec, benchmarks, TypeScript SDK.

ort-python

Object Record Table - a CSV like structured data format with native object and array support.

isonantic

🔥 🔥 Alternative to JSON 🔥 🔥

pixel-canon

The canon for pixel data topology. A cross-language specification to define the logical layout of images.

simple-toon

Python parser and serializer for TOON (Token-Oriented Object Notation) - Reduce LLM token usage by 30-60%