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