チュートリアル：アプリケーションのバージョン管理

import json
from openai import OpenAI

import weave

@weave.op()
def extract_dinos(wmodel: weave.Model, sentence: str) -> dict:
    response = wmodel.client.chat.completions.create(
        model=wmodel.model_name,
        temperature=wmodel.temperature,
        messages=[
            {
                "role": "system",
                "content": wmodel.system_prompt
            },
            {
                "role": "user",
                "content": sentence
            }
            ],
            response_format={ "type": "json_object" }
        )
    return response.choices[0].message.content

# weave.Model を使ったサブクラス
class ExtractDinos(weave.Model):
    client: OpenAI = None
    model_name: str
    temperature: float
    system_prompt: str

    # 関数名は `invoke` または `predict` にしてください
    @weave.op()
    def invoke(self, sentence: str) -> dict:
        dino_data  = extract_dinos(self, sentence)
        return json.loads(dino_data)

weave.init('jurassic-park')
client = OpenAI()

system_prompt = """Extract any dinosaur `name`, their `common_name`, \
names and whether its `diet` is a herbivore or carnivore, in JSON format."""

dinos = ExtractDinos(
    client=client,
    model_name='gpt-4o',
    temperature=0.4,
    system_prompt=system_prompt
)

sentence = """I watched as a Tyrannosaurus rex (T. rex) chased after a Triceratops (Trike), \
both carnivore and herbivore locked in an ancient dance. Meanwhile, a gentle giant \
Brachiosaurus (Brachi) calmly munched on treetops, blissfully unaware of the chaos below."""

result = dinos.invoke(sentence)
print(result)

# エクスポートした weave model はすでに初期化されており、すぐに呼び出せます
new_dinos = weave.ref("weave://morgan/jurassic-park/object/ExtractDinos:ey4udBU2MU23heQFJenkVxLBX4bmDsFk7vsGcOWPjY4").get()

# client を再び openai client に設定します
new_dinos.client = client

new_sentence = """I also saw an Ankylosaurus grazing on giant ferns"""
new_result = new_dinos.invoke(new_sentence)
print(new_result)