Optional

Opsional[X] setara dengan X | Tidak ada (atau Persatuan[X, Tidak Ada]).

Syntax

PYTHON Copy

typing.Optional

Contoh

Example 1

PYTHON Copy

def foo(arg: int = 0) -> None:
    ...

Example 2

PYTHON Copy

def foo(arg: Optional[int] = None) -> None:
    ...

See Also

union type expressions