如何根据某个json key值注入`time`属性？

import json
import time

def inject_time_property(json_data, target_key):
    # 解析JSON数据
    data = json.loads(json_data)

    # 遍历JSON数据
    def traverse(obj):
        if isinstance(obj, dict):
            for key, value in obj.items():
                if key == target_key:
                    # 注入`time`属性
                    obj['time'] = time.time()
                traverse(value)
        elif isinstance(obj, list):
            for item in obj:
                traverse(item)

    traverse(data)

    # 转换为JSON字符串
    modified_json = json.dumps(data)

    return modified_json