工具调用

import json

tools = [{
    "type": "function",
    "function": {
        "name": "get_weather",
        "description": "查询城市当前天气",
        "parameters": {
            "type": "object",
            "properties": {"city": {"type": "string", "description": "城市名，例如北京"}},
            "required": ["city"],
        },
    },
}]

res = client.chat.completions.create(
    model="qwen3.7-plus",
    messages=[{"role": "user", "content": "北京现在天气怎么样？"}],
    tools=tools,
)

call = res.choices[0].message.tool_calls[0]
result = get_weather(**json.loads(call.function.arguments))

followup = client.chat.completions.create(
    model="qwen3.7-plus",
    messages=[
        {"role": "user", "content": "北京现在天气怎么样？"},
        res.choices[0].message,
        {"role": "tool", "tool_call_id": call.id, "content": json.dumps(result, ensure_ascii=False)},
    ],
    tools=tools,
)