diff options
| -rw-r--r-- | Lib/test/test_types.py | 10 | ||||
| -rw-r--r-- | Objects/unionobject.c | 2 |
2 files changed, 11 insertions, 1 deletions
diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py index 83196ad..d8a48ce 100644 --- a/Lib/test/test_types.py +++ b/Lib/test/test_types.py @@ -737,6 +737,16 @@ class TypesTests(unittest.TestCase): with self.assertRaises(ZeroDivisionError): list[int] | list[bt] + union_ga = (int | list[str], int | collections.abc.Callable[..., str], + int | d) + # Raise error when isinstance(type, type | genericalias) + for type_ in union_ga: + with self.subTest(f"check isinstance/issubclass is invalid for {type_}"): + with self.assertRaises(TypeError): + isinstance(list, type_) + with self.assertRaises(TypeError): + issubclass(list, type_) + def test_ellipsis_type(self): self.assertIsInstance(Ellipsis, types.EllipsisType) diff --git a/Objects/unionobject.c b/Objects/unionobject.c index 32aa507..0535036 100644 --- a/Objects/unionobject.c +++ b/Objects/unionobject.c @@ -34,7 +34,7 @@ is_generic_alias_in_args(PyObject *args) { Py_ssize_t nargs = PyTuple_GET_SIZE(args); for (Py_ssize_t iarg = 0; iarg < nargs; iarg++) { PyObject *arg = PyTuple_GET_ITEM(args, iarg); - if (Py_TYPE(arg) == &Py_GenericAliasType) { + if (PyObject_TypeCheck(arg, &Py_GenericAliasType)) { return 0; } } |