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| author | Sebastian Rittau <srittau@rittau.biz> | 2022-02-12 03:12:06 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-02-11 18:12:06 -0800 |
| commit | e982c967c94943327252bccdba4436cd624b301a (patch) | |
| tree | fb0832e8dd551227985e4e52cbe1b3e15bb3ca8c | |
| parent | 9403ccf18c826d2028841bea77ea66c3f6045f7b (diff) | |
| download | typing-e982c967c94943327252bccdba4436cd624b301a.tar.gz | |
Built-in generic now work without limitations (#1068)
Closes: #1067
| -rw-r--r-- | docs/source/stubs.rst | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/docs/source/stubs.rst b/docs/source/stubs.rst index 161d679..8408c80 100644 --- a/docs/source/stubs.rst +++ b/docs/source/stubs.rst @@ -174,18 +174,20 @@ Type checkers support cyclic imports in stub files. Built-in Generics ----------------- -PEP 585 [#pep585]_ built-in generics are generally supported, with -the following exceptions [#ts-4820]_: +PEP 585 [#pep585]_ built-in generics are supported and should be used instead +of the corresponding types from ``typing``:: -* Built-in generics don't work in type aliases. -* Built-in generics don't work in base classes. -* ``type`` is not supported. -* Variable length tuples (``tuple[X, ...]``) are not supported. + from collections import defaultdict -In these cases, the appropriate types from ``typing`` must be used. + def foo(t: type[MyClass]) -> list[int]: ... + x: defaultdict[int] Using imports from ``collections.abc`` instead of ``typing`` is -generally possible and recommended. +generally possible and recommended:: + + from collections.abc import Iterable + + def foo(iter: Iterable[int]) -> None: ... Unions ------ @@ -1102,7 +1104,6 @@ Bugs ---- .. [#ts-4819] typeshed issue #4819 -- PEP 604 tracker (https://github.com/python/typeshed/issues/4819) -.. [#ts-4820] typeshed issue #4820 -- PEP 585 tracker (https://github.com/python/typeshed/issues/4820) .. [#ts-4913] typeshed issue #4913 -- PEP 613 tracker (https://github.com/python/typeshed/issues/4913) .. [#ts-4972] typeshed issue #4972 -- PEP 570 tracker (https://github.com/python/typeshed/issues/4972) |