delta/cpython-git.git/Include/genericaliasobject.h, branch master github.com: python/cpython.git bpo-44654: Refactor and clean up the union type implementation (GH-27196) 2021-07-17T19:44:10+00:00 Serhiy Storchaka storchaka@gmail.com 2021-07-17T19:44:10+00:00 0fd27375cabd12e68a2f12cfeca11a2d5043429e 






bpo-44490: Add __parameters__ and __getitem__ to types.Union (GH-26980)
2021-07-06T18:04:33+00:00

Yurii Karabas
1998uriyyo@gmail.com

2021-07-06T18:04:33+00:00

c45fa1a5d9b419cf13ad4b5a7cb453956495b83e

Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
Co-authored-by: Guido van Rossum <gvanrossum@gmail.com>




Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
Co-authored-by: Guido van Rossum <gvanrossum@gmail.com>






bpo-39481: Implementation for PEP 585 (#18239)
2020-04-07T16:50:06+00:00

Guido van Rossum
guido@python.org

2020-04-07T16:50:06+00:00

48b069a003ba6c684a9ba78493fbbec5e89f10b8

This implements things like `list[int]`,
which returns an object of type `types.GenericAlias`.
This object mostly acts as a proxy for `list`,
but has attributes `__origin__` and `__args__`
that allow recovering the parts (with values `list` and `(int,)`.

There is also an approximate notion of type variables;
e.g. `list[T]` has a `__parameters__` attribute equal to `(T,)`.
Type variables are objects of type `typing.TypeVar`.





This implements things like `list[int]`,
which returns an object of type `types.GenericAlias`.
This object mostly acts as a proxy for `list`,
but has attributes `__origin__` and `__args__`
that allow recovering the parts (with values `list` and `(int,)`.

There is also an approximate notion of type variables;
e.g. `list[T]` has a `__parameters__` attribute equal to `(T,)`.
Type variables are objects of type `typing.TypeVar`.