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| author | Serhiy Storchaka <storchaka@gmail.com> | 2022-04-13 03:08:49 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-04-13 03:08:49 (GMT) |
| commit | 15537c51c188a6633248c25d211d5216e673aee3 (patch) | |
| tree | 6ccc7404181320732cd6c02377d0fc8041b00a0e /Lib/typing.py | |
| parent | 0859368335d470b9ff33fc53ed9a85ec2654b278 (diff) | |
| download | cpython-15537c51c188a6633248c25d211d5216e673aee3.zip cpython-15537c51c188a6633248c25d211d5216e673aee3.tar.gz cpython-15537c51c188a6633248c25d211d5216e673aee3.tar.bz2 | |
bpo-43224: Forbid TypeVar substitution with Unpack (GH-32031)
Diffstat (limited to 'Lib/typing.py')
| -rw-r--r-- | Lib/typing.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/typing.py b/Lib/typing.py index 46fc722..1b584be 100644 --- a/Lib/typing.py +++ b/Lib/typing.py @@ -965,6 +965,8 @@ class TypeVar(_Final, _Immutable, _BoundVarianceMixin, _root=True): def __typing_subst__(self, arg): msg = "Parameters to generic types must be types." arg = _type_check(arg, msg, is_argument=True) + if (isinstance(arg, _GenericAlias) and arg.__origin__ is Unpack): + raise TypeError(f"{arg} is not valid as type argument") return arg |