使用递归更改json中的值

import json

def update_json(json_data, target_key, new_value):
    if isinstance(json_data, dict):
        for key, value in json_data.items():
            if key == target_key:
                json_data[key] = new_value
            elif isinstance(value, (dict, list)):
                update_json(value, target_key, new_value)
    elif isinstance(json_data, list):
        for item in json_data:
            if isinstance(item, (dict, list)):
                update_json(item, target_key, new_value)

# 示例JSON数据
json_str = '''
{
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Street",
        "city": "New York"
    },
    "hobbies": ["reading", "music"]
}
'''

# 将JSON字符串解析为Python对象
json_data = json.loads(json_str)

# 调用递归函数更新JSON中的值
update_json(json_data, "city", "Los Angeles")

# 将更新后的JSON对象转换为字符串
updated_json_str = json.dumps(json_data, indent=4)

print(updated_json_str)