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. 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 need. This is equivalent to typing_extensions >=x.y, <(x+1). Do not depend on ~= x.y.z unless you really know what you're doing; that defeats the purpose of semantic versioning.

Included items

See the documentation for a complete listing of module contents.

Contributing

See CONTRIBUTING.md for how to contribute to typing_extensions.

分类

Development Status :: 5 - Production/Stable Environment :: Console Intended Audience :: Developers Operating System :: OS Independent Programming Language :: Python :: 3 Programming Language :: Python :: 3 :: Only Programming Language :: Python :: 3.10 Programming Language :: Python :: 3.11 Programming Language :: Python :: 3.12 Programming Language :: Python :: 3.13 Programming Language :: Python :: 3.14 Programming Language :: Python :: 3.9 Topic :: Software Development

版本列表

4.15.0 2025-08-25

4.15.0rc1 2025-08-18

4.14.1 2025-07-04

4.14.0 2025-06-02

4.14.0rc1 2025-05-24

4.13.2 2025-04-10

4.13.1 2025-04-03

4.13.0 2025-03-26

4.13.0rc1 2025-03-18

4.12.2 2024-06-07

4.12.1 2024-06-01

4.12.0 2024-05-24

4.12.0rc1 2024-05-16

4.12.0a2 2024-05-16

4.11.0 2024-04-05

4.11.0rc1 2024-03-24

4.10.0 2024-02-25

4.10.0rc1 2024-02-18

4.9.0 2023-12-10

4.9.0rc1 2023-11-29

4.8.0 2023-09-18

4.8.0rc1 2023-09-08

4.7.1 2023-07-02

4.7.0 2023-06-28

4.7.0rc1 2023-06-21

4.6.3 2023-06-01

4.6.2 2023-05-25

4.6.1 2023-05-24

4.6.0 2023-05-23

4.5.0 2023-02-15

4.4.0 2022-10-06

4.3.0 2022-07-01

4.2.0 2022-04-17

4.1.1 2022-02-14

4.1.0 2022-02-12

4.0.1 2021-12-01

4.0.0 2021-11-14

3.10.0.2 2021-08-30

3.10.0.1 2021-08-29

3.10.0.0 2021-05-01

3.7.4.3 2020-08-23

3.7.4.2 2020-04-02

3.7.4.1 2019-10-28

3.7.4 2019-06-19

3.7.2 2019-01-12

3.6.6 2018-10-06

3.6.5 2018-05-07

3.6.2.1 2017-09-30

3.6.2 2017-09-17