ormsgpack 1.12.2


pip install ormsgpack

  Latest version

Released: Jan 18, 2026
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Author: Aviram Hassan, Emanuele Giaquinta
Requires Python: >=3.10
Classifiers

Development Status
  • 5 - Production/Stable

Intended Audience
  • Developers

License
  • OSI Approved :: Apache Software License
  • OSI Approved :: MIT License

Operating System
  • MacOS
  • Microsoft :: Windows
  • POSIX :: Linux

Programming Language
  • Python :: 3
  • Python :: 3.10
  • Python :: 3.11
  • Python :: 3.12
  • Python :: 3.13
  • Python :: 3.14
  • Python :: Implementation :: CPython
  • Python :: Implementation :: GraalPy
  • Python :: Implementation :: PyPy
  • Python
  • Rust

Typing
  • Typed

ormsgpack

PyPI - Version PyPI - Python Version PyPI - Downloads

ormsgpack is a fast MessagePack serialization library for Python derived from orjson, with native support for various Python types.

ormsgpack follows semantic versioning and supports CPython, PyPy and GraalPy.

Links:

Installation

pip

pip install ormsgpack

uv

uv add ormsgpack

Installing from a source distribution requires Rust 1.81 or newer and maturin.

Quickstart

This is an example of serializing and deserializing an object:

>>> import ormsgpack, datetime, numpy
>>> event = {
...     "type": "put",
...     "time": datetime.datetime(1970, 1, 1),
...     "uid": 1,
...     "data": numpy.array([1, 2]),
... }
>>> ormsgpack.packb(event, option=ormsgpack.OPT_SERIALIZE_NUMPY)
b'\x84\xa4type\xa3put\xa4time\xb31970-01-01T00:00:00\xa3uid\x01\xa4data\x92\x01\x02'
>>> ormsgpack.unpackb(_)
{'type': 'put', 'time': '1970-01-01T00:00:00', 'uid': 1, 'data': [1, 2]}

License

orjson was written by ijl <ijl@mailbox.org>, copyright 2018 - 2021, licensed under both the Apache License, Version 2.0, and the MIT License.

ormsgpack was forked from orjson by Aviram Hassan and is now maintained by Emanuele Giaquinta (@exg), licensed under both the Apache License, Version 2.0, and the MIT License.

1.12.2 Jan 18, 2026
1.12.1 Dec 14, 2025
1.12.0 Nov 04, 2025
1.11.0 Oct 08, 2025
1.10.0 May 24, 2025
1.9.1 Mar 28, 2025
1.9.0 Mar 23, 2025
1.8.0 Feb 22, 2025
1.7.0 Dec 08, 2024
1.6.0 Oct 18, 2024
1.5.0 Apr 20, 2024
1.4.2 Jan 28, 2024
1.4.1 Nov 12, 2023
1.4.0 Nov 05, 2023
1.3.0 Oct 04, 2023
1.2.6 Apr 24, 2023
1.2.5 Feb 02, 2023
1.2.4 Nov 16, 2022
1.2.3 Jun 26, 2022
1.2.2 Apr 19, 2022
1.2.1 Mar 01, 2022
1.2.0 Feb 14, 2022
1.1.0 Jan 08, 2022
1.0.3 Dec 18, 2021
1.0.2 Oct 26, 2021
1.0.1 Oct 13, 2021
1.0.0 Aug 31, 2021
0.3.6 Aug 24, 2021
0.3.5 Aug 05, 2021
0.3.4 Jul 27, 2021
0.3.3 Jul 23, 2021
0.3.2 Jul 13, 2021
0.3.1 Jun 25, 2021
0.3.0 Jun 13, 2021
0.2.1 Jun 12, 2021
0.2.0 Jun 10, 2021
0.1.0 Jun 08, 2021

Wheel compatibility matrix

Platform CPython 3.10 CPython 3.11 CPython 3.12 CPython 3.13 CPython 3.14 CPython (additional flags: t) 3.14
macosx_10_12_universal2
macosx_10_12_x86_64
macosx_11_0_arm64
manylinux2014_aarch64
manylinux2014_armv7l
manylinux2014_x86_64
manylinux_2_17_aarch64
manylinux_2_17_armv7l
manylinux_2_17_x86_64
musllinux_1_2_aarch64
musllinux_1_2_armv7l
musllinux_1_2_x86_64
win_amd64
win_arm64

Files in release

ormsgpack-1.12.2-cp310-cp310-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl (369.4KiB)
ormsgpack-1.12.2-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (198.3KiB)
ormsgpack-1.12.2-cp310-cp310-manylinux_2_17_armv7l.manylinux2014_armv7l.whl (205.6KiB)
ormsgpack-1.12.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (207.4KiB)
ormsgpack-1.12.2-cp310-cp310-musllinux_1_2_aarch64.whl (378.0KiB)
ormsgpack-1.12.2-cp310-cp310-musllinux_1_2_armv7l.whl (471.0KiB)
ormsgpack-1.12.2-cp310-cp310-musllinux_1_2_x86_64.whl (415.2KiB)
ormsgpack-1.12.2-cp310-cp310-win_amd64.whl (114.4KiB)
ormsgpack-1.12.2-cp311-cp311-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl (369.4KiB)
ormsgpack-1.12.2-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (198.3KiB)
ormsgpack-1.12.2-cp311-cp311-manylinux_2_17_armv7l.manylinux2014_armv7l.whl (205.6KiB)
ormsgpack-1.12.2-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (207.4KiB)
ormsgpack-1.12.2-cp311-cp311-musllinux_1_2_aarch64.whl (378.0KiB)
ormsgpack-1.12.2-cp311-cp311-musllinux_1_2_armv7l.whl (471.0KiB)
ormsgpack-1.12.2-cp311-cp311-musllinux_1_2_x86_64.whl (415.2KiB)
ormsgpack-1.12.2-cp311-cp311-win_amd64.whl (114.4KiB)
ormsgpack-1.12.2-cp311-cp311-win_arm64.whl (108.9KiB)
ormsgpack-1.12.2-cp312-cp312-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl (369.7KiB)
ormsgpack-1.12.2-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (198.4KiB)
ormsgpack-1.12.2-cp312-cp312-manylinux_2_17_armv7l.manylinux2014_armv7l.whl (205.8KiB)
ormsgpack-1.12.2-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (207.6KiB)
ormsgpack-1.12.2-cp312-cp312-musllinux_1_2_aarch64.whl (378.1KiB)
ormsgpack-1.12.2-cp312-cp312-musllinux_1_2_armv7l.whl (471.2KiB)
ormsgpack-1.12.2-cp312-cp312-musllinux_1_2_x86_64.whl (415.5KiB)
ormsgpack-1.12.2-cp312-cp312-win_amd64.whl (114.7KiB)
ormsgpack-1.12.2-cp312-cp312-win_arm64.whl (108.9KiB)
ormsgpack-1.12.2-cp313-cp313-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl (369.8KiB)
ormsgpack-1.12.2-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (198.4KiB)
ormsgpack-1.12.2-cp313-cp313-manylinux_2_17_armv7l.manylinux2014_armv7l.whl (205.8KiB)
ormsgpack-1.12.2-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (207.6KiB)
ormsgpack-1.12.2-cp313-cp313-musllinux_1_2_aarch64.whl (378.1KiB)
ormsgpack-1.12.2-cp313-cp313-musllinux_1_2_armv7l.whl (471.2KiB)
ormsgpack-1.12.2-cp313-cp313-musllinux_1_2_x86_64.whl (415.6KiB)
ormsgpack-1.12.2-cp313-cp313-win_amd64.whl (114.7KiB)
ormsgpack-1.12.2-cp313-cp313-win_arm64.whl (109.0KiB)
ormsgpack-1.12.2-cp314-cp314-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl (369.8KiB)
ormsgpack-1.12.2-cp314-cp314-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (198.4KiB)
ormsgpack-1.12.2-cp314-cp314-manylinux_2_17_armv7l.manylinux2014_armv7l.whl (205.9KiB)
ormsgpack-1.12.2-cp314-cp314-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (207.7KiB)
ormsgpack-1.12.2-cp314-cp314-musllinux_1_2_aarch64.whl (378.1KiB)
ormsgpack-1.12.2-cp314-cp314-musllinux_1_2_armv7l.whl (471.3KiB)
ormsgpack-1.12.2-cp314-cp314-musllinux_1_2_x86_64.whl (415.6KiB)
ormsgpack-1.12.2-cp314-cp314-win_amd64.whl (114.7KiB)
ormsgpack-1.12.2-cp314-cp314-win_arm64.whl (109.0KiB)
ormsgpack-1.12.2-cp314-cp314t-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl (369.8KiB)
ormsgpack-1.12.2-cp314-cp314t-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (198.4KiB)
ormsgpack-1.12.2-cp314-cp314t-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (207.8KiB)
ormsgpack-1.12.2-cp314-cp314t-win_amd64.whl (114.5KiB)
ormsgpack-1.12.2.tar.gz (38.1KiB)
No dependencies