"""天气查询工具"""
from langchain_core.tools import tool


@tool
def get_weather(city: str) -> str:
    """查询指定城市的天气信息"""
    weather_data = {
        "北京": "晴天，气温22°C，北风3级",
        "上海": "多云，气温25°C，东风2级",
        "深圳": "阵雨，气温28°C，南风4级",
        "黄庄": "晴转多云，气温23°C，微风",
    }
    return weather_data.get(city, f"暂无{city}的天气数据")


# 暴露工具列表供自动扫描
TOOLS = [get_weather]