関連ワード:  python object of type method is not json serializable    python object of type function is not json serializable    python typeerror object of type method is not json serializable    python typeerror object of type function is not json serializable    python object of type builtin_function_or_method is not json serializable    python typeerror object of type builtin_function_or_method is not json serializable    object of type method is not json serializable    object of type date is not json serializable python  
結果 : python object of type method is not json serializable