diff options
| author | Gregory Beauregard <greg@greg.red> | 2022-01-28 16:58:39 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-01-28 16:58:39 (GMT) |
| commit | 5445e173e76ec792358082caf660fbdc846c64b2 (patch) | |
| tree | 3def2baf86fec5a64b0f5e234c94da3b2e1afe73 /Lib/typing.py | |
| parent | 45faf151c693b6f13f78926761caea6df7242024 (diff) | |
| download | cpython-5445e173e76ec792358082caf660fbdc846c64b2.zip cpython-5445e173e76ec792358082caf660fbdc846c64b2.tar.gz cpython-5445e173e76ec792358082caf660fbdc846c64b2.tar.bz2 | |
bpo-46553: allow bare typing.ClassVar annotations (#30983)
These are used in the wild and covered by dataclasses unit tests.
Several static type checkers support this pattern.
Diffstat (limited to 'Lib/typing.py')
| -rw-r--r-- | Lib/typing.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/typing.py b/Lib/typing.py index 36b95d7..232aa1a 100644 --- a/Lib/typing.py +++ b/Lib/typing.py @@ -173,7 +173,7 @@ def _type_check(arg, msg, is_argument=True, module=None, *, allow_special_forms= if (isinstance(arg, _GenericAlias) and arg.__origin__ in invalid_generic_forms): raise TypeError(f"{arg} is not valid as type argument") - if arg in (Any, NoReturn, Final): + if arg in (Any, NoReturn, ClassVar, Final): return arg if isinstance(arg, _SpecialForm) or arg in (Generic, Protocol): raise TypeError(f"Plain {arg} is not valid as type argument") |