types-mypy-extensions
Typing stubs for mypy-extensions
Decision gist · record as of 2026-08-14
Yes, if you use mypy-extensions and want type checking. Install it as a development dependency alongside mypy or pyright. It has no runtime cost, is actively maintained, and requires only Python 3.10+. No security concerns and permissive licensing. Skip it only if you don't use mypy-extensions or don't use a type checker.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Low install friction with no runtime dependencies.
- Actively maintained as part of the typeshed project, with a recent release (21 days old) and ongoing repository activity.
License · maintenance · safety
Apache-2.0 (permissive) — Licensed under Apache-2.0 (permissive), allowing free use, modification, and distribution with minimal restrictions.
last release 2026-07-24 (21 days) · last repo commit 2026-08-14 · 37 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 148,873 downloads/mo, #11,015 on PyPI
Alternatives
Verify before relying
pip install types-mypy-extensions
# Then use mypy or pyright to type-check code that imports mypy-extensions
# mypy will automatically discover and use these stubs- Whether these stubs cover all public APIs of mypy-extensions 1.1.x or only a subset.
- How frequently stubs are updated when mypy-extensions itself receives updates.
What it is and what it does
This package is a type stub distribution for mypy-extensions, part of the typeshed project. Type stubs are files that describe the types and signatures of a library's public interface without containing implementation code. When you install this package alongside mypy-extensions, type checkers like mypy and pyright can understand and validate code that uses mypy-extensions, catching type errors at development time rather than runtime.
The stubs are maintained centrally in typeshed and generated from that repository. They target mypy-extensions version 1.1.x and have been tested with mypy 2.3.0 and pyright 1.1.411. Since this is a stub-only package with no runtime dependencies, it adds no overhead to your application—it exists purely to improve type-checking quality during development.
Use it for
- Enable mypy or pyright to type-check code that uses mypy-extensions without false positives or missing type information.
- Develop type-safe applications that depend on mypy-extensions while catching type errors before runtime.
- Contribute to or maintain projects that use mypy-extensions and want full IDE and linter support.
- Ensure compatibility between your codebase and mypy-extensions' public API through static type analysis.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you use mypy-extensions and want type checking.
Install it as a development dependency alongside mypy or pyright. It has no runtime cost, is actively maintained, and requires only Python 3.10+. No security concerns and permissive licensing. Skip it only if you don't use mypy-extensions or don't use a type checker.
Install
types-mypy-extensions on PyPI
Before you install
Low install friction with no runtime dependencies. Actively maintained as part of the typeshed project, with a recent release (21 days old) and ongoing repository activity.
Requires Python 3.10 or later.
License in practice
Licensed under Apache-2.0 (permissive), allowing free use, modification, and distribution with minimal restrictions.
Quickstart
pip install types-mypy-extensions
# Then use mypy or pyright to type-check code that imports mypy-extensions
# mypy will automatically discover and use these stubsVerify before relying
- Whether these stubs cover all public APIs of mypy-extensions 1.1.x or only a subset.
- How frequently stubs are updated when mypy-extensions itself receives updates.
Package facts
| License | Apache-2.0 permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 21 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 148,873 / month, #11,015 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_mypy_extensions-1.1.0.20260724-py3-none-any.whl
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See also mypy-extensions · types-boltons · types-docutils · types-netaddr · types-oauthlib · types-paramiko · types-pyflakes · types-six · types-zstd · types-waitress