■ SimpleJsonOutputParser 클래스를 사용해 체인에서 구조화된 데이터를 구하는 방법을 보여준다.
※ OPENAI_API_KEY 환경 변수 값은 .env 파일에 정의한다.
▶ main.py
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from dotenv import load_dotenv from langchain_core.prompts import PromptTemplate from langchain_openai import OpenAI from langchain.output_parsers.json import SimpleJsonOutputParser load_dotenv() promptTemplat = PromptTemplate.from_template( "Return a JSON object with an `answer` key that answers the following question : {question}" ) openAI = OpenAI(model_name = "gpt-3.5-turbo-instruct", temperature = 0.0) runnableSequence = promptTemplat | openAI | SimpleJsonOutputParser() responseDictionary = runnableSequence.invoke({"question" : "Who invented the microscope?"}) print(responseDictionary) """ {'answer': 'Antonie van Leeuwenhoek'} """ |
▶ 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 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==0.2.6 langchain-core==0.2.10 langchain-openai==0.1.10 langchain-text-splitters==0.2.2 langsmith==0.1.82 multidict==6.0.5 numpy==1.26.4 openai==1.35.4 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==8.4.2 tiktoken==0.7.0 tqdm==4.66.4 typing_extensions==4.12.2 urllib3==2.2.2 yarl==1.9.4 |
※ pip install python-dotenv langchain langchain-openai