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.
FAQs
Backported and Experimental Type Hints for Python 3.8+
We found that typing-extensions demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 6 open source maintainers collaborating on the project.
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