関連ワード:  python type is not json serializable    python class is not json serializable    python object type is not json serializable    python type datetime is not json serializable    python data class is not json serializable    python custom class is not json serializable    python class object is not json serializable    python typeerror object of type is not json serializable    python dataclass object of type is not json serializable    python enum object of type is not json serializable