如何使用嵌套json中的键创建另一个嵌套json

import json

def create_nested_json(original_json):
    nested_json = {}  # 创建新的嵌套JSON对象

    def process_json(data, nested):
        for key, value in data.items():
            if isinstance(value, dict):  # 如果值是字典，则递归处理
                nested[key] = {}
                process_json(value, nested[key])
            else:
                nested[key] = value  # 将键和值添加到嵌套JSON中

    process_json(original_json, nested_json)

    return json.dumps(nested_json)  # 将嵌套JSON对象转换为JSON字符串

# 示例用法
original_json = {
    "key1": "value1",
    "key2": {
        "nested_key1": "nested_value1",
        "nested_key2": "nested_value2"
    },
    "key3": "value3"
}

nested_json_str = create_nested_json(original_json)
print(nested_json_str)

{
    "key1": "value1",
    "key2": {
        "nested_key1": "nested_value1",
        "nested_key2": "nested_value2"
    },
    "key3": "value3"
}