def METHOD_NAME() -> dict:
    week_idx: int
    return {
        "a": [
            0,
            1,
            2,
            3,
            4,
            5,
            6,
            7,
            8,
            9,
            10,
            11,
        ],
        "b": [
            datetime.datetime(2021, 1, 1, 0, 0, 0)
            + datetime.timedelta(days=(week_idx * 7))
            for week_idx in range(12)
        ],
    }