如何使用python从json中提取数据并将附加值添加到提取的值中？

import json

# 读取JSON文件
with open('data.json') as f:
    data = json.load(f)

# 或者解析JSON字符串
data = json.loads(json_string)

value = data['key']

value_with_additional = value + ' additional'

data['key'] = value_with_additional

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

# 写入到文件
with open('updated_data.json', 'w') as f:
    json.dump(data, f)