from typing import Union

key = 'foo'
x: dict[str, Union[str, bool]] = {
    'foo': {
        'key1': 'value',
        'key2': True,
    },
    'bar': {
        'key3': 'value',
        'key4': False,
    },
}[key]

main.py:4: error: Incompatible types in assignment (expression has type "Dict[str, object]", variable has type "Dict[str, Union[str, bool]]")
Found 1 error in 1 file (checked 1 source file)