types-ujson
Typing stubs for ujson
Decision gist · record as of 2026-08-14
Yes, if you need static type checking for the corresponding library version 5.10.* and are on Python 3.9+. The package has low install friction and no runtime dependencies. Verify whether your library version includes built-in type stubs before installing.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python >=3.9.
- Intended for use with the subject package's corresponding library version 5.10.*.
- Low friction installation with no runtime dependencies.
License · maintenance · safety
Apache-2.0 (permissive) — Apache-2.0 permissive license allows free use, modification, and distribution in most projects without significant restriction.
last release 2025-08-22 (357 days) · last repo commit 2026-08-14 · 37 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 2,471,609 downloads/mo, #3,048 on PyPI
Alternatives
Verify before relying
pip install types-ujson
import types_ujson- Whether version 5.10.* remains in active use given that newer versions include built-in type annotations
- Compatibility with type checkers beyond mypy 1.17.1 and pyright 1.1.404
What it is and what it does
types-ujson is a type stub package that provides type annotations for a JSON serialization library. It allows static type checkers like mypy and pyright to understand and validate the types of function calls and return values in code that uses the library. The stubs are generated from the typeshed project and tested against mypy 1.17.1 and pyright 1.1.404.
This package contains no runtime code—it only provides metadata for type checkers. It is designed for Python 3.9 or later and targets library version 5.10.*. The package is part of the typeshed project, and all fixes and contributions should be directed there.
Use it for
- Enable mypy or pyright to type-check code that calls the library in a Python 3.9+ project.
- Catch type errors in serialization and deserialization calls before runtime.
- Provide IDE autocomplete and type hints for library methods when using a compatible editor.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need static type checking for the corresponding library version 5.10.* and are on Python 3.9+.
The package has low install friction and no runtime dependencies. Verify whether your library version includes built-in type stubs before installing.
Install
types-ujson on PyPI
Before you install
Low friction installation with no runtime dependencies. Actively maintained as part of typeshed; last commit 2026-08-14.
Requires Python >=3.9. Intended for use with the subject package's corresponding library version 5.10.*.
License in practice
Apache-2.0 permissive license allows free use, modification, and distribution in most projects without significant restriction.
Quickstart
pip install types-ujson
import types_ujsonVerify before relying
- Whether version 5.10.* remains in active use given that newer versions include built-in type annotations
- Compatibility with type checkers beyond mypy 1.17.1 and pyright 1.1.404
Package facts
| License | Apache-2.0 permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 357 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 2,471,609 / month, #3,048 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Programming Language :: Python :: 3Typing :: Stubs Only |
Evidence: types_ujson-5.10.0.20250822-py3-none-any.whl
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See also types-simplejson · ujson · types-jsonschema · types-html5lib · types-docutils · types-grpcio-reflection · types-toml · types-jmespath · types-pyflakes · types-Markdown