…yping (pythonGH-13685)This is an old feature request that appears from time to time. After a year of experimenting with various introspection capabilities in `typing_inspect` on PyPI, I propose to add these two most commonly used functions: `get_origin()` and `get_args()`. These are essentially thin public wrappers around private APIs: `__origin__` and `__args__`.As discussed in the issue and on the typing tracker, exposing some public helpers instead of `__origin__` and `__args__` directly will give us more flexibility if we will decide to update the internal representation, while still maintaining backwards compatibility.The implementation is very simple an is essentially a copy from `typing_inspect` with one exception: `ClassVar` was special-cased in `typing_inspect`, but I think this special-casing doesn't really help and only makes things more complicated.

The implementations come from CPython commit 427c84f13f77 with one smallchange – the get_origin's docstring mentions Annotated as it's alsosupported.get_origin() and get_args() introduced in [1] and modified in [2] tosupport Annotated.[1]python/cpython#13685[2]python/cpython#18260

The implementations come from CPython commit 427c84f13f77 with one smallchange – the get_origin's docstring mentions Annotated as it's alsosupported.get_origin() and get_args() introduced in [1] and modified in [2] tosupport Annotated.[1]python/cpython#13685[2]python/cpython#18260* Define our own get_origin()/get_args() in typing_extensions on Python 3.8Otherwise typing_extensions.get_origin() would not recognizetyping_extensions.Annotated on 3.8.

The implementations come from CPython commit 427c84f13f77 with one smallchange – the get_origin's docstring mentions Annotated as it's alsosupported.get_origin() and get_args() introduced in [1] and modified in [2] tosupport Annotated.[1]python/cpython#13685[2]python/cpython#18260* Define our own get_origin()/get_args() in typing_extensions on Python 3.8Otherwise typing_extensions.get_origin() would not recognizetyping_extensions.Annotated on 3.8.

The implementations come from CPython commit 427c84f13f77 with one smallchange – the get_origin's docstring mentions Annotated as it's alsosupported.get_origin() and get_args() introduced in [1] and modified in [2] tosupport Annotated.[1]python/cpython#13685[2]python/cpython#18260* Define our own get_origin()/get_args() in typing_extensions on Python 3.8Otherwise typing_extensions.get_origin() would not recognizetyping_extensions.Annotated on 3.8.