如何将空值作为参数从java传递到python

import java.io.IOException;

public class PythonCaller {
    public static void main(String[] args) {
        try {
            // 创建ProcessBuilder对象，并指定要执行的Python命令
            ProcessBuilder pb = new ProcessBuilder("python", "your_python_script.py", "null");
            
            // 启动进程并等待其完成
            Process process = pb.start();
            int exitCode = process.waitFor();
            
            // 检查进程的退出码
            if (exitCode == 0) {
                System.out.println("Python脚本执行成功！");
            } else {
                System.out.println("Python脚本执行失败！");
            }
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}