mashumaro

Fast and well tested serialization library

mashumaro Permissive license Apache-2.0 Active ★ 934 v3.22 released 2026-05-26

Install

mashumaro on PyPI

pip

pip install mashumaro

uv

uv add mashumaro

poetry

poetry add mashumaro

Package facts

License	Apache-2.0 (permissive)
Python support	supports the current Python release (>=3.10)
Install friction	low — pure-Python wheel
Runtime dependencies	1 — typing_extensions
Maintenance	actively maintained — 79 days since the last release
Last repo commit	2026-07-23
First released	2018-09-11
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: mashumaro-3.22-py3-none-any.whl

Development Status :: 5 - Production/StableIntended Audience :: DevelopersOperating System :: OS IndependentProgramming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14

About mashumaro

from the package's own PyPI description — quoted content, verbatim

Fast and well tested serialization library

Build Status (image) Coverage status (image) Latest Version (image) Python Version (image) License (image) </div>

In Python, you often need to dump and load objects based on the schema you have. It can be a dataclass model, a list of third-party generic classes or whatever. Mashumaro not only lets you save and load things in different ways, but it also does it super quick.

Key features * 🚀 One of the fastest libraries * ☝️ Mature and time-tested * 👶...

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