1. lagent

参考文档

https://github.com/InternLM/Tutorial/blob/camp2/agent/lagent.md

1. 使用 LMDeploy 部署

conda activate agent
lmdeploy serve api_server /root/share/new_models/Shanghai_AI_Laboratory/internlm2-chat-7b \
                            --server-name 127.0.0.1 \
                            --model-name internlm2-chat-7b \
                            --cache-max-entry-count 0.1

2.启动并使用 Lagent Web Demo

conda activate agent
cd /root/agent/lagent/examples
streamlit run internlm2_agent_web_demo.py --server.address 127.0.0.1 --server.port 7860

3. 使用自带的arxive search插件进行论文搜索：

4. 自定义工具（天气查询）进行调用
准备和风天气的API

首先通过 touch /root/agent/lagent/lagent/actions/weather.py（大小写敏感）新建工具，文件使用的代码为：

import json
import os
import requests
from typing import Optional, Type

from lagent.actions.base_action import BaseAction, tool_api
from lagent.actions.parser import BaseParser, JsonParser
from lagent.schema import ActionReturn, ActionStatusCode

class WeatherQuery(BaseAction):
    """天气查询插件，用于查询天气信息。"""
    
    def __init__(self,
                 key: Optional[str] = None,  # 可选参数：API 密钥
                 description: Optional[dict] = None,
                 parser: Type[BaseParser] = JsonParser,
                 enable: bool = True) -> None:
        super().__init__(description, parser, enable)
        # 从环境变量或传入的参数中获取天气 API 密钥
        key = os.environ.get('WEATHER_API_KEY', key)
        if key is None:
            raise ValueError(
                '请设置天气 API 密钥，可以通过环境变量 WEATHER_API_KEY 设置，或者在实例化时传入 key 参数'
            )
        self.key = key
        # 设置用于查询城市信息和天气信息的 URL
        self.location_query_url = 'https://geoapi.qweather.com/v2/city/lookup'
        self.weather_query_url = 'https://devapi.qweather.com/v7/weather/now'

    @tool_api
    def run(self, query: str) -> ActionReturn:
        """执行天气查询的方法。

        Args:
            query (str): 要查询的城市名称。
        """
        tool_return = ActionReturn(type=self.name)
        # 调用 _search 方法查询天气信息
        status_code, response = self._search(query)
        if status_code == -1:
            tool_return.errmsg = response
            tool_return.state = ActionStatusCode.HTTP_ERROR
        elif status_code == 200:
            # 解析查询结果并返回
            parsed_res = self._parse_results(response)
            tool_return.result = [dict(type='text', content=str(parsed_res))]
            tool_return.state = ActionStatusCode.SUCCESS
        else:
            tool_return.errmsg = str(status_code)
            tool_return.state = ActionStatusCode.API_ERROR
        return tool_return
    
    def _parse_results(self, results: dict) -> str:
        """解析从 QWeather API 返回的天气信息。

        Args:
            results (dict): QWeather API 返回的天气信息，JSON 格式。

        Returns:
            str: 解析后的天气信息。
        """
        now = results['now']
        data = [
            f'数据观测时间: {now["obsTime"]}',
            f'温度: {now["temp"]}°C',
            f'体感温度: {now["feelsLike"]}°C',
            f'天气: {now["text"]}',
            f'风向: {now["windDir"]}，角度为 {now["wind360"]}°',
            f'风力等级: {now["windScale"]}，风速为 {now["windSpeed"]} km/h',
            f'相对湿度: {now["humidity"]}',
            f'当前小时累计降水量: {now["precip"]} mm',
            f'大气压强: {now["pressure"]} 百帕',
            f'能见度: {now["vis"]} km',
        ]
        return '\n'.join(data)

    def _search(self, query: str):
        """查询城市代码和天气信息。

        Args:
            query (str): 要查询的城市名称。

        Returns:
            tuple: 包含状态码和响应结果的元组。
        """
        # 查询城市代码
        try:
            city_code_response = requests.get(
                self.location_query_url,
                params={'key': self.key, 'location': query}
            )
        except Exception as e:
            return -1, str(e)
        if city_code_response.status_code != 200:
            return city_code_response.status_code, city_code_response.json()
        city_code_response = city_code_response.json()
        if len(city_code_response['location']) == 0:
            return -1, '未查询到城市'
        city_code = city_code_response['location'][0]['id']
        # 查询天气信息
        try:
            weather_response = requests.get(
                self.weather_query_url,
                params={'key': self.key, 'location': city_code}
            )
        except Exception as e:
            return -1, str(e)
        return weather_response.status_code, weather_response.json()

运行结果

但是换成明天的就不行了

2. AgentLego：组装智能体“乐高”

参考文档

https://github.com/InternLM/Tutorial/blob/camp2/agent/agentlego.md#1-%E7%9B%B4%E6%8E%A5%E4%BD%BF%E7%94%A8-agentlego

直接使用 AgentLego

安装相关依赖后，上传一张街景图片，使用目标检测工具。
通过 touch /root/agent/direct_use.py（大小写敏感）的方式在 /root/agent 目录下新建 direct_use.py 以直接使用目标检测工具，direct_use.py 的代码如下：

import re

import cv2
from agentlego.apis import load_tool

# load tool
tool = load_tool('ObjectDetection', device='cuda')

# apply tool
visualization = tool('/root/agent/road.jpg')
print(visualization)

# visualize
image = cv2.imread('/root/agent/road.jpg')

preds = visualization.split('\n')
pattern = r'(\w+) \((\d+), (\d+), (\d+), (\d+)\), score (\d+)'

for pred in preds:
    name, x1, y1, x2, y2, score = re.match(pattern, pred).groups()
    x1, y1, x2, y2, score = int(x1), int(y1), int(x2), int(y2), int(score)
    cv2.rectangle(image, (x1, y1), (x2, y2), (0, 255, 0), 1)
    cv2.putText(image, f'{name} {score}', (x1, y1), cv2.FONT_HERSHEY_SIMPLEX, 0.8, (0, 255, 0), 1)

cv2.imwrite('/root/agent/road_detection_direct.jpg', image)

运行结果如下：

可以发现其识别出了car/person/truck/bicycle/bus等物体

更换一张图片进行测试：

会发现他没有识别出物体
“No object found”

再次更换一张街景图片进行识别

这是香港街头的一张图片，虽然比较复杂，但可以看出还是可以识别出大部分物体的。但图片左侧有一些人没有识别出来。

作为智能体工具使用

这样的使用方式可以在Web页面中，新增agent和工具吗，然后指定agent调用工具

3. 使用自定义工具

首先通过 touch /root/agent/agentlego/agentlego/tools/magicmaker_image_generation.py（大小写敏感）的方法新建工具文件。

import json
import requests

import numpy as np

from agentlego.types import Annotated, ImageIO, Info
from agentlego.utils import require
from .base import BaseTool


class MagicMakerImageGeneration(BaseTool):

    default_desc = ('This tool can call the api of magicmaker to '
                    'generate an image according to the given keywords.')

    styles_option = [
        'dongman',  # 动漫
        'guofeng',  # 国风
        'xieshi',   # 写实
        'youhua',   # 油画
        'manghe',   # 盲盒
    ]
    aspect_ratio_options = [
        '16:9', '4:3', '3:2', '1:1',
        '2:3', '3:4', '9:16'
    ]

    @require('opencv-python')
    def __init__(self,
                 style='guofeng',
                 aspect_ratio='4:3'):
        super().__init__()
        if style in self.styles_option:
            self.style = style
        else:
            raise ValueError(f'The style must be one of {self.styles_option}')
        
        if aspect_ratio in self.aspect_ratio_options:
            self.aspect_ratio = aspect_ratio
        else:
            raise ValueError(f'The aspect ratio must be one of {aspect_ratio}')

    def apply(self,
              keywords: Annotated[str,
                                  Info('A series of Chinese keywords separated by comma.')]
        ) -> ImageIO:
        import cv2
        response = requests.post(
            url='https://magicmaker.openxlab.org.cn/gw/edit-anything/api/v1/bff/sd/generate',
            data=json.dumps({
                "official": True,
                "prompt": keywords,
                "style": self.style,
                "poseT": False,
                "aspectRatio": self.aspect_ratio
            }),
            headers={'content-type': 'application/json'}
        )
        image_url = response.json()['data']['imgUrl']
        image_response = requests.get(image_url)
        image = cv2.cvtColor(cv2.imdecode(np.frombuffer(image_response.content, np.uint8), cv2.IMREAD_COLOR),cv2.COLOR_BGR2RGB)
        return ImageIO(image)