如何重塑这个嵌套的JSON数据？

import json

def reshape_json(json_data):
    reshaped_data = {}  # 创建一个新的数据结构，用于存储重塑后的JSON数据

    def reshape_helper(data, prefix=''):
        if isinstance(data, dict):
            for key, value in data.items():
                new_key = prefix + key  # 可以更改键的名称，添加前缀等
                reshape_helper(value, new_key + '_')  # 递归处理嵌套的字典
        elif isinstance(data, list):
            for index, item in enumerate(data):
                new_key = prefix + str(index)  # 可以更改键的名称，使用索引等
                reshape_helper(item, new_key + '_')  # 递归处理嵌套的列表
        else:
            reshaped_data[prefix[:-1]] = data  # 将处理后的键值对放入新的数据结构中

    reshape_helper(json_data)

    return json.dumps(reshaped_data)  # 将重塑后的数据结构转换为JSON字符串

# 示例用法
original_json = {
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "New York"
    },
    "hobbies": ["reading", "traveling"]
}

reshaped_json = reshape_json(original_json)
print(reshaped_json)

{
    "name": "John",
    "age": 30,
    "address_street": "123 Main St",
    "address_city": "New York",
    "hobbies_0": "reading",
    "hobbies_1": "traveling"
}