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Typing Extensions

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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. 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.

Metadata

Release files for typing-extensions 4.15.0rc1

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Source distribution for typing-extensions 4.15.0rc1
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typing_extensions-4.15.0rc1-py3-none-any.whl Python 3 none any Details

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4.15.0

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4.15.0rc1 This release

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4.13.2

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4.12.0

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4.10.0

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4.9.0

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4.7.1

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4.6.3

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4.6.1

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4.6.0

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4.1.1

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4.1.0

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4.0.1

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4.0.0

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3.7.4

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3.7.2

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