Third-Party Import of: https://github.com/python/typing_extensions Request Document: go/android3p For CL Reviewers: go/android3p#reviewing-a-cl For Build Team: go/ab-third-party-imports Bug: http://b/346844476 Original import of the code can be found at: https://googleplex-android.googlesource.com/platform/external/python/typing_extensions/+/refs/heads/third-party-review. Security Questionnaire: http://b/346844476#comment1 Change-Id: Ie6e07388b2acd63315f887beb496fa6cac82fe3c
The typing_extensions module serves two related purposes:
typing.TypeGuard is new in Python 3.10, but typing_extensions allows users on previous Python versions to use it too.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, <(x+1), where x.y is the first version that includes all features you need.
See the documentation for a complete listing of module contents.
See CONTRIBUTING.md for how to contribute to typing_extensions.