如何在运行时以编程方式转换对象？

import pickle

# 序列化对象
with open('object.pickle', 'wb') as f:
    pickle.dump(obj, f)

# 反序列化对象
with open('object.pickle', 'rb') as f:
    obj = pickle.load(f)

import java.io.*;

// 序列化对象
try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("object.ser"))) {
    oos.writeObject(obj);
}

// 反序列化对象
try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream("object.ser"))) {
    obj = ois.readObject();
}

// 序列化对象
const jsonString = JSON.stringify(obj);

// 反序列化对象
const obj = JSON.parse(jsonString);

using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

// 序列化对象
using (BinaryWriter bw = new BinaryWriter(File.Open("object.bin", FileMode.Create))) {
    BinaryFormatter bf = new BinaryFormatter();
    bf.Serialize(bw.BaseStream, obj);
}

// 反序列化对象
using (BinaryReader br = new BinaryReader(File.Open("object.bin", FileMode.Open))) {
    BinaryFormatter bf = new BinaryFormatter();
    obj = bf.Deserialize(br.BaseStream);
}