Union doesn't simplify arguments in isinstance #3073
Description
from typing import Any
o: object = 1
if isinstance(o, (int, str, int)):
reveal_type(o) # revealed type is 'Union[builtins.int, builtins.str, builtins.int]'
{{ message }}
from typing import Any
o: object = 1
if isinstance(o, (int, str, int)):
reveal_type(o) # revealed type is 'Union[builtins.int, builtins.str, builtins.int]'