[PYTHON/LANGCHAIN] ChatOpenAI 클래스 : with_fallbacks 메소드를 사용해 컨텍스트 길이가 더 긴 모델을 설정한 ChatOpenAI 객체로 대체하는 RunnableWithFallbacks 객체 만들기

■ ChatOpenAI 클래스의 with_fallbacks 메소드를 사용해 컨텍스트 길이가 더 긴 모델을 설정한 ChatOpenAI 객체로 대체하는 RunnableWithFallbacks 객체를 만드는 방법을 보여준다.

※ OPENAI_API_KEY 환경 변수 값은 .env 파일에 정의한다.

▶ main.py


from dotenv           import load_dotenv
from langchain_openai import ChatOpenAI

load_dotenv()

shortTokenChatOpenAI = ChatOpenAI()
longTokenChatOpenAI  = ChatOpenAI(model="gpt-3.5-turbo-16k")

runnableWithFallbacks = shortTokenChatOpenAI.with_fallbacks([longTokenChatOpenAI])

inputMessage = "What is the next number : " + ", ".join(["one", "two"] * 3000)

try:
    print(runnableWithFallbacks.invoke(inputMessage))
except Exception as exception:
    print(exception)

"""
# 가이드에서는 아래와 같이 나온다고 했으나

content='The next number in the sequence is two.' additional_kwargs={} example=False

# 실제는 아래와 같은 에러 메시지가 출력되었다.

Error code: 400 - {'error': {'message': "Sorry! We've encountered an issue with repetitive patterns in your prompt. Please try again with a different prompt.", 'type': 'invalid_request_error', 'param': 'prompt', 'code': 'invalid_prompt'}}
"""

from dotenv import load_dotenv

from langchain_openai import ChatOpenAI

load_dotenv()

shortTokenChatOpenAI = ChatOpenAI()

longTokenChatOpenAI = ChatOpenAI(model="gpt-3.5-turbo-16k")

runnableWithFallbacks = shortTokenChatOpenAI.with_fallbacks([longTokenChatOpenAI])

inputMessage = "What is the next number : " + ", ".join(["one", "two"] * 3000)

try:

print(runnableWithFallbacks.invoke(inputMessage))

except Exception as exception:

print(exception)

"""

# 가이드에서는 아래와 같이 나온다고 했으나

content='The next number in the sequence is two.' additional_kwargs={} example=False

# 실제는 아래와 같은 에러 메시지가 출력되었다.

Error code: 400 - {'error': {'message': "Sorry! We've encountered an issue with repetitive patterns in your prompt. Please try again with a different prompt.", 'type': 'invalid_request_error', 'param': 'prompt', 'code': 'invalid_prompt'}}

"""

▶ requirements.txt


annotated-types==0.7.0
anyio==4.4.0
certifi==2024.6.2
charset-normalizer==3.3.2
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==0.2.9
langchain-openai==0.1.9
langsmith==0.1.81
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
tenacity==8.4.1
tiktoken==0.7.0
tqdm==4.66.4
typing_extensions==4.12.2
urllib3==2.2.2

annotated-types==0.7.0

anyio==4.4.0

certifi==2024.6.2

charset-normalizer==3.3.2

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==0.2.9

langchain-openai==0.1.9

langsmith==0.1.81

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

tenacity==8.4.1

tiktoken==0.7.0

tqdm==4.66.4

typing_extensions==4.12.2

urllib3==2.2.2

※ psp install python-dotenv langchain-openai 명령을 실행했다.