quaternion_from_euler error?

[light-years-run]

        qw, qx, qy, qz = quaternion_from_euler(waypoint[3], waypoint[4], waypoint[5])
        
        pose_ = deepcopy(pose)
        pose_.position.x = waypoint[0]
        pose_.position.y = waypoint[1]
        pose_.position.z = waypoint[2]
        pose_.orientation.w = qw
        pose_.orientation.x = qx
        pose_.orientation.y = qy
        pose_.orientation.z = qz

it should be qx, qy, qz,qw ?
because quaternion_from_euler return an array , q[3] should be w