如何比较两个JSON文件并形成新的自定义JSON

import json

def compare_json(file1, file2):
    with open(file1, 'r') as f1, open(file2, 'r') as f2:
        json1 = json.load(f1)
        json2 = json.load(f2)
    
    custom_json = {}
    
    # 遍历json1的键值对
    for key, value in json1.items():
        if key in json2:
            # 比较相同键的值
            if value != json2[key]:
                # 自定义处理方式，这里示例为将两个值合并为列表
                custom_json[key] = [value, json2[key]]
        else:
            # json2中没有该键，直接保留json1中的值
            custom_json[key] = value
    
    # 遍历json2的键值对，处理json2中独有的键
    for key, value in json2.items():
        if key not in json1:
            custom_json[key] = value
    
    # 将自定义JSON对象序列化为JSON字符串
    custom_json_str = json.dumps(custom_json, indent=4)
    
    return custom_json_str

# 示例用法
file1 = 'file1.json'
file2 = 'file2.json'
custom_json_str = compare_json(file1, file2)
print(custom_json_str)