---
id: typing-extensions
version: "4.16.0"
license: PSF-2.0
license_treatment: permissive
maintenance: active
---

# typing-extensions — Backported and Experimental Type Hints for Python 3.9+

License: permissive · Maintenance: active · Popularity: top 100 on PyPI

## Install

pip install typing-extensions
uv add typing-extensions
poetry add typing-extensions

## Description

# Typing Extensions

[![Chat at https://gitter.im/python/typing](https://badges.gitter.im/python/typing.svg)](https://gitter.im/python/typing)

[Documentation](https://typing-extensions.readthedocs.io/en/latest/#) –
[PyPI](https://pypi.org/project/typing-extensions/)

## Overview

The `typing_extensions` module serves two related purposes:

- Enable use of new type system features on older Python versions. For example,
  `typing.TypeGuard` is new in Python 3.10, but `typing_extensions` allows
  users on previous Python versions to use it too.
- Enable experimentation with new type system PEPs before they are accepted and
  added to the `typing` module.

`typing_extensions` is treated specially by static type checkers such as
mypy and pyright. Objects defined in `typing_extensions` are treated the same
way as equivalent forms in `typing`.

`typing_extensions` uses
[Semantic Versioning](https://semver.org/). The
major version will be incremented only for backwards-incompatible changes.
Therefore, it's safe to depend
on `typing_extensions` like this: `typing_extensions ~=x.y`,
where `x.y` is the first version that includes all features you...

## AI interpretation — verify before relying

Backports and experiments with Python's type-hinting features, enabling use of new typing constructs on older Python versions and allowing early exploration of typing PEPs before they enter the standard library.

Verdict: A stable, zero-dependency utility for type-hinting backports and experimentation, actively maintained and widely adopted (top 100 PyPI). Safe to depend on with semantic versioning guarantees and no known vulnerabilities.

[View on SkillFed](https://skillfed.io/packages/typing-extensions) · [View on PyPI](https://pypi.org/project/typing-extensions/)