> ## Documentation Index
> Fetch the complete documentation index at: https://browser-use.mingxi.ltd/llms.txt
> Use this file to discover all available pages before exploring further.

# 输出格式

> 默认是文本格式。但你可以定义结构化的输出格式以便于后处理。

## 自定义输出格式

使用[此示例](https://github.com/browser-use/browser-use/blob/main/examples/features/custom_output.py)可以定义代理应该返回给你的输出格式。

```python theme={null}
from pydantic import BaseModel
# 将输出格式定义为 Pydantic 模型
class Post(BaseModel):
	post_title: str
	post_url: str
	num_comments: int
	hours_since_post: int


class Posts(BaseModel):
	posts: List[Post]


controller = Controller(output_model=Posts)


async def main():
	task = '访问 hackernews show hn 并给我前 5 个帖子'
	model = ChatOpenAI(model='gpt-4o')
	agent = Agent(task=task, llm=model, controller=controller)

	history = await agent.run()

	result = history.final_result()
	if result:
		parsed: Posts = Posts.model_validate_json(result)

		for post in parsed.posts:
			print('\n--------------------------------')
			print(f'标题:            {post.post_title}')
			print(f'URL:              {post.post_url}')
			print(f'评论数:         {post.num_comments}')
			print(f'发布时间(小时): {post.hours_since_post}')
	else:
		print('无结果')


if __name__ == '__main__':
	asyncio.run(main())
```