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Metadata-Version: 2.4
Name: typing_extensions
Version: 4.15.0
Summary: Backported and Experimental Type Hints for Python 3.9+
Keywords: annotations,backport,checker,checking,function,hinting,hints,type,typechecking,typehinting,typehints,typing
Author-email: "Guido van Rossum, Jukka Lehtosalo, Łukasz Langa, Michael Lee" <levkivskyi@gmail.com>
Requires-Python: >=3.9
Description-Content-Type: text/markdown
License-Expression: PSF-2.0
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Console
Classifier: Intended Audience :: Developers
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Programming Language :: Python :: 3.14
Classifier: Topic :: Software Development
License-File: LICENSE
Project-URL: Bug Tracker, https://github.com/python/typing_extensions/issues
Project-URL: Changes, https://github.com/python/typing_extensions/blob/main/CHANGELOG.md
Project-URL: Documentation, https://typing-extensions.readthedocs.io/
Project-URL: Home, https://github.com/python/typing_extensions
Project-URL: Q & A, https://github.com/python/typing/discussions
Project-URL: Repository, https://github.com/python/typing_extensions
# Typing Extensions
[](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 need.
[This](https://packaging.python.org/en/latest/specifications/version-specifiers/#compatible-release)
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](https://typing-extensions.readthedocs.io/en/latest/#) for a
complete listing of module contents.
## Contributing
See [CONTRIBUTING.md](https://github.com/python/typing_extensions/blob/main/CONTRIBUTING.md)
for how to contribute to `typing_extensions`.
