https://blog.wongcw.com/2021/10/11/python%e8%b6%85java%e3%80%81c%ef%bc%9a%e6%88%90%e6%9c%80%e5%8f%97%e6%ad%a1%e8%bf%8e%e7%a8%8b%e5%bc%8f%e8%a8%ad%e8%a8%88%e8%aa%9e%e8%a8%80/