{"library":"typing-extensions","type":"library","category":null,"description":"typing-extensions provides backported and experimental type hints for Python, serving two purposes: enabling use of new type system features on older Python versions (e.g., TypeGuard from 3.10 is available on 3.9+), and enabling experimentation with new PEP-proposed typing constructs before they land in the standard library. The library also re-exports all names from the standard typing module, so it can serve as a single import source. Current version is 4.15.0 (as of early 2026); feature releases follow an irregular cadence under Semantic Versioning where only the major version is bumped for breaking changes.","language":"python","status":"active","version":"4.15.0","tags":["typing","type-hints","backport","mypy","pyright","annotations","stdlib"],"last_verified":"Tue Jun 09","install":[{"cmd":"pip install typing-extensions","imports":["from typing_extensions import TypedDict","from typing_extensions import Annotated","from typing_extensions import Protocol","from typing_extensions import Self","from typing_extensions import TypeAlias","from typing_extensions import TypeAliasType","from typing_extensions import TypeGuard","from typing_extensions import TypeIs","from typing_extensions import override","from typing_extensions import deprecated","from typing_extensions import get_annotations","from typing_extensions import evaluate_forward_ref","from typing_extensions import Buffer","from typing_extensions import LiteralString","from typing_extensions import Never"]},{"cmd":"pip install 'typing-extensions~=4.15'","imports":[]}],"homepage":null,"github":"https://github.com/python/typing_extensions","docs":"https://typing-extensions.readthedocs.io/","changelog":"https://github.com/python/typing_extensions/blob/main/CHANGELOG.md","pypi":"https://pypi.org/project/typing-extensions/","npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"compatibility":{"summary":{"python_range":"3.10–3.9","success_rate":100,"avg_install_s":1.6,"avg_import_s":0.04,"wheel_type":"wheel"},"url":"https://checklist.day/v1/registry/typing-extensions/compatibility"}}