■ XMLOutputParser 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_core.output_parsers import XMLOutputParser load_dotenv() xmlOutputParser = XMLOutputParser() promptTemplate = PromptTemplate( template = "{query}\n{format_instructions}", input_variables = ["query"], partial_variables = {"format_instructions" : xmlOutputParser.get_format_instructions()}, ) openAI = OpenAI(temperature = 0.0, max_tokens = 512) runnableSequence = promptTemplate | openAI | xmlOutputParser responseDictionary = runnableSequence.invoke({"query" : "Generate the shortened filmography for Tom Hanks."}) print(responseDictionary) """ {'filmography': [{'film': [{'title': 'Forrest Gump'}, {'year': '1994'}]}, {'film': [{'title': 'Cast Away'}, {'year': '2000'}]}, {'film': [{'title': 'Saving Private Ryan'}, {'year': '1998'}]}, {'film': [{'title': 'Apollo 13'}, {'year': '1995'}]}, {'film': [{'title': 'The Green Mile'}, {'year': '1999'}]}, {'film': [{'title': 'Toy Story'}, {'year': '1995'}]}, {'film': [{'title': 'Toy Story 2'}, {'year': '1999'}]}, {'film': [{'title': 'Toy Story 3'}, {'year': '2010'}]}, {'film': [{'title': 'Philadelphia'}, {'year': '1993'}]}, {'film': [{'title': 'Big'}, {'year': '1988'}]}]} """ |
▶ requirements.txt
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annotated-types==0.7.0 anyio==4.4.0 certifi==2024.6.2 charset-normalizer==3.3.2 defusedxml==0.7.1 distro==1.9.0 exceptiongroup==1.2.1 h11==0.14.0 httpcore==1.0.5 httpx==0.27.0 idna==3.7 jsonpatch==1.33 jsonpointer==3.0.0 langchain-core==0.2.10 langchain-openai==0.1.10 langsmith==0.1.82 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 tenacity==8.4.2 tiktoken==0.7.0 tqdm==4.66.4 typing_extensions==4.12.2 urllib3==2.2.2 |
※ pip install python-dotenv langchain-openai defusedxml 명령을 실행했다.