{"library":"py-ubjson","title":"Universal Binary JSON","description":"py-ubjson is a Python library providing a Universal Binary JSON (UBJSON) encoder and decoder, adhering to the draft-12 specification. It aims to offer an API similar to Python's built-in `json` module for seamless serialization and deserialization of UBJSON data. The library includes an optional C extension for significant performance improvements. The current version is 0.16.1.","language":"python","status":"active","last_verified":"Fri May 15","install":{"commands":["pip install py-ubjson"],"cli":null},"imports":["import ubjson","from ubjson import dumpb","from ubjson import loadb","from ubjson import dump","from ubjson import load"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import ubjson\n\ndata = {\n    'name': 'Alice',\n    'age': 30,\n    'isStudent': False,\n    'courses': ['Math', 'Science'],\n    'grades': {'Math': 95, 'Science': 88}\n}\n\n# Encode to UBJSON bytes\nencoded_data = ubjson.dumpb(data)\nprint(f\"Encoded (bytes): {encoded_data!r}\")\n\n# Decode from UBJSON bytes\ndecoded_data = ubjson.loadb(encoded_data)\nprint(f\"Decoded: {decoded_data}\")\n\nassert data == decoded_data","lang":"python","description":"This example demonstrates how to encode a Python dictionary into UBJSON bytes and then decode it back using `ubjson.dumpb` and `ubjson.loadb`.","tag":null,"tag_description":null,"last_tested":null,"results":[]},"compatibility":{"tag":null,"tag_description":null,"last_tested":"2026-05-15","installed_version":"0.16.1","pypi_latest":"0.16.1","is_stale":false,"summary":{"python_range":"3.10–3.9","success_rate":100,"avg_install_s":2.5,"avg_import_s":0.01,"wheel_type":"sdist"},"results":[{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine (musl)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"19.3M"},{"runtime":"python:3.10-slim","python_version":"3.10","os_libc":"slim (glibc)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2,"import_time_s":0,"mem_mb":0.3,"disk_size":"20M"},{"runtime":"python:3.11-alpine","python_version":"3.11","os_libc":"alpine (musl)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"21.7M"},{"runtime":"python:3.11-slim","python_version":"3.11","os_libc":"slim (glibc)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.1,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"22M"},{"runtime":"python:3.12-alpine","python_version":"3.12","os_libc":"alpine (musl)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"11.6M"},{"runtime":"python:3.12-slim","python_version":"3.12","os_libc":"slim (glibc)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":3.1,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"12M"},{"runtime":"python:3.13-alpine","python_version":"3.13","os_libc":"alpine (musl)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.01,"mem_mb":0.5,"disk_size":"11.3M"},{"runtime":"python:3.13-slim","python_version":"3.13","os_libc":"slim (glibc)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.8,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"12M"},{"runtime":"python:3.9-alpine","python_version":"3.9","os_libc":"alpine (musl)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"18.9M"},{"runtime":"python:3.9-slim","python_version":"3.9","os_libc":"slim (glibc)","variant":"py-ubjson","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.3,"import_time_s":0.01,"mem_mb":0.3,"disk_size":"19M"}]}}