老张API 函数调用（Function Calling）：Chat Completions 与 Responses 写法

import json
import os

from openai import OpenAI

client = OpenAI(api_key=os.environ["LAOZHANG_API_KEY"], base_url="https://api.laozhang.ai/v1")
MODEL = "gpt-5.4-mini"

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


def get_weather(city):
    return {"city": city, "temp_c": 18, "sky": "多云"}  # 换成你的实现


messages = [{"role": "user", "content": "巴黎现在天气怎么样？"}]
first = client.chat.completions.create(model=MODEL, messages=messages, tools=tools)
message = first.choices[0].message

if message.tool_calls:
    messages.append(message)
    for call in message.tool_calls:
        args = json.loads(call.function.arguments)
        messages.append({
            "role": "tool",
            "tool_call_id": call.id,
            "content": json.dumps(get_weather(**args), ensure_ascii=False),
        })
    second = client.chat.completions.create(model=MODEL, messages=messages, tools=tools)
    print(second.choices[0].message.content)
else:
    print(message.content)

import json
import os

from openai import OpenAI

client = OpenAI(api_key=os.environ["LAOZHANG_API_KEY"], base_url="https://api.laozhang.ai/v1")
MODEL = "gpt-6.1-sol"

tools = [{
    "type": "function",
    "name": "get_weather",
    "description": "查询城市当前天气",
    "parameters": {
        "type": "object",
        "properties": {"city": {"type": "string"}},
        "required": ["city"],
        "additionalProperties": False,
    },
    "strict": True,
}]

question = {"role": "user", "content": "巴黎现在天气怎么样？"}
first = client.responses.create(model=MODEL, input=[question], tools=tools)

history = [question]
for item in first.output:
    if item.type != "function_call":
        continue
    args = json.loads(item.arguments)
    result = {"city": args["city"], "temp_c": 18, "sky": "多云"}  # 换成你的实现
    history.append({"type": "function_call", "call_id": item.call_id,
                    "name": item.name, "arguments": item.arguments})
    history.append({"type": "function_call_output", "call_id": item.call_id,
                    "output": json.dumps(result, ensure_ascii=False)})

second = client.responses.create(model=MODEL, input=history, tools=tools)
print(second.output_text)