如何将JSON对象的嵌套部分转换为点链接的平面JSON？

def flatten_json(json_obj, prefix=''):
    flattened = {}
    for key, value in json_obj.items():
        new_key = prefix + '.' + key if prefix else key
        if isinstance(value, dict):
            flattened.update(flatten_json(value, new_key))
        else:
            flattened[new_key] = value
    return flattened

{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York",
    "state": "NY"
  }
}

{
  "name": "John",
  "age": 30,
  "address.street": "123 Main St",
  "address.city": "New York",
  "address.state": "NY"
}