■ get_openai_callback 함수를 사용해 OpenAI 호출에 대한 메타 데이터를 수집하는 방법을 보여준다.
※ OPENAI_API_KEY 환경 변수 값은 .env 파일에 정의한다.
▶ main.py
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import json from dotenv import load_dotenv from langchain_core.prompts import ChatPromptTemplate from langchain_openai import ChatOpenAI from langchain_core.runnables import RunnableConfig from langchain_core.output_parsers import StrOutputParser from langchain_community.callbacks import get_openai_callback from langchain_core.runnables import RunnableLambda load_dotenv() chatPromptTemplate = ChatPromptTemplate.from_template( "Fix the following text :\n\n```text\n{input}\n```\nError : {error}" " Don't narrate, just respond with the fixed data." ) chatOpenAI = ChatOpenAI() def parseJSON(jsonText : str, config : RunnableConfig): # config 인자명을 변경하면 에러가 발생한다. runnableSequence = chatPromptTemplate | chatOpenAI | StrOutputParser() for _ in range(3): try: return json.loads(jsonText) except Exception as exception: jsonText = runnableSequence.invoke({"input" : jsonText, "error" : exception}, config) return "Failed to parse" with get_openai_callback() as generatorContextManager: responseDictionary = RunnableLambda(parseJSON).invoke("{foo : bar}", {"tags" : ["tag1"], "callbacks" : [generatorContextManager]}) print(responseDictionary) print() print(generatorContextManager) """ {'foo': 'bar'} Tokens Used: 63 Prompt Tokens: 56 Completion Tokens: 7 Successful Requests: 1 Total Cost (USD): $9.800000000000001e-05 """ |
▶ requirements.txt
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aiohttp==3.9.5 aiosignal==1.3.1 annotated-types==0.7.0 anyio==4.4.0 async-timeout==4.0.3 attrs==23.2.0 certifi==2024.6.2 charset-normalizer==3.3.2 dataclasses-json==0.6.7 distro==1.9.0 exceptiongroup==1.2.1 frozenlist==1.4.1 greenlet==3.0.3 h11==0.14.0 httpcore==1.0.5 httpx==0.27.0 idna==3.7 jsonpatch==1.33 jsonpointer==3.0.0 langchain==0.2.5 langchain-community==0.2.5 langchain-core==0.2.9 langchain-openai==0.1.8 langchain-text-splitters==0.2.1 langsmith==0.1.81 marshmallow==3.21.3 multidict==6.0.5 mypy-extensions==1.0.0 numpy==1.26.4 openai==1.35.3 orjson==3.10.5 packaging==24.1 pydantic==2.7.4 pydantic_core==2.18.4 python-dotenv==1.0.1 PyYAML==6.0.1 regex==2024.5.15 requests==2.32.3 sniffio==1.3.1 SQLAlchemy==2.0.31 tenacity==8.4.1 tiktoken==0.7.0 tqdm==4.66.4 typing-inspect==0.9.0 typing_extensions==4.12.2 urllib3==2.2.2 yarl==1.9.4 |
※ pip install python-dotenv langchain langchain-community langchain_openai 명령을 실행했다.