typing-extensions


Nametyping-extensions JSON
Version 4.12.2 PyPI version JSON
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home_pageNone
SummaryBackported and Experimental Type Hints for Python 3.8+
upload_time2024-06-07 18:52:15
maintainerNone
docs_urlNone
authorNone
requires_python>=3.8
licenseNone
keywords annotations backport checker checking function hinting hints type typechecking typehinting typehints typing
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            # 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, <(x+1)`,
where `x.y` is the first version that includes all features you need.

## 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`.


            

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    "description": "# Typing Extensions\n\n[![Chat at https://gitter.im/python/typing](https://badges.gitter.im/python/typing.svg)](https://gitter.im/python/typing)\n\n[Documentation](https://typing-extensions.readthedocs.io/en/latest/#) \u2013\n[PyPI](https://pypi.org/project/typing-extensions/)\n\n## Overview\n\nThe `typing_extensions` module serves two related purposes:\n\n- Enable use of new type system features on older Python versions. For example,\n  `typing.TypeGuard` is new in Python 3.10, but `typing_extensions` allows\n  users on previous Python versions to use it too.\n- Enable experimentation with new type system PEPs before they are accepted and\n  added to the `typing` module.\n\n`typing_extensions` is treated specially by static type checkers such as\nmypy and pyright. Objects defined in `typing_extensions` are treated the same\nway as equivalent forms in `typing`.\n\n`typing_extensions` uses\n[Semantic Versioning](https://semver.org/). The\nmajor version will be incremented only for backwards-incompatible changes.\nTherefore, it's safe to depend\non `typing_extensions` like this: `typing_extensions >=x.y, <(x+1)`,\nwhere `x.y` is the first version that includes all features you need.\n\n## Included items\n\nSee [the documentation](https://typing-extensions.readthedocs.io/en/latest/#) for a\ncomplete listing of module contents.\n\n## Contributing\n\nSee [CONTRIBUTING.md](https://github.com/python/typing_extensions/blob/main/CONTRIBUTING.md)\nfor how to contribute to `typing_extensions`.\n\n",
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