■ get_openai_callback 함수를 사용해 체인에서 복수 호출시 토큰 사용량을 구하는 방법을 보여준다.
※ OPENAI_API_KEY 환경 변수 값은 .env 파일에 정의한다.
▶ main.py
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 |
from dotenv import load_dotenv from langchain_core.prompts import PromptTemplate from langchain_openai import OpenAI from langchain_community.callbacks import get_openai_callback load_dotenv() promptTemplate = PromptTemplate.from_template("Tell me a joke about {topic}") openAI = OpenAI(model_name = "gpt-3.5-turbo-instruct") runnableSequence = promptTemplate | openAI with get_openai_callback() as generatorContextManager: responseString1 = runnableSequence.invoke({"topic" : "birds"}) print(responseString1) print("--------------------------------------------------") responseString2 = runnableSequence.invoke({"topic" : "fish"}) print(responseString2) print("--------------------------------------------------") print() print(f"Total Tokens : {generatorContextManager.total_tokens}" ) print(f"Prompt Tokens : {generatorContextManager.prompt_tokens}" ) print(f"Completion Tokens : {generatorContextManager.completion_tokens}") print(f"Total Cost (USD) : ${generatorContextManager.total_cost}" ) """ Why do birds fly south in the winter? Because it's too far to walk! -------------------------------------------------- Why did the fish blush? Because it saw the ocean's bottom! -------------------------------------------------- Total Tokens : 45 Prompt Tokens : 12 Completion Tokens : 33 Total Cost (USD) : $8.400000000000001e-05 """ |
▶ requirements.txt
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 |
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==0.1.9 langchain-text-splitters==0.2.1 langsmith==0.1.82 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==8.4.2 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-community langchain-openai 명령을 실행했다.