[PYTHON/LANGCHAIN] StructuredTool 클래스 : invoke 메소드를 사용해 도구 함수 호출하기

■ StructuredTool 클래스의 invoke 메소드를 사용해 도구 함수를 호출하는 방법을 보여준다.

▶ main.py


from typing_extensions        import TypedDict
from typing                   import List
from langchain_core.runnables import RunnableLambda

class Argument(TypedDict):
    a : int
    b : List[int]

def test(x : Argument) -> str:
    return str(x["a"] * max(x["b"]))

runnableLambda = RunnableLambda(test)

structuredTool = runnableLambda.as_tool(
    name        = "My tool",
    description = "Explanation of when to use tool.",
)

responseString = structuredTool.invoke({"a" : 3, "b" : [1, 2]})

print(responseString)

"""
6
"""

from typing_extensions import TypedDict

from typing import List

from langchain_core.runnables import RunnableLambda

class Argument(TypedDict):

a : int

b : List[int]

def test(x : Argument) -> str:

return str(x["a"] * max(x["b"]))

runnableLambda = RunnableLambda(test)

structuredTool = runnableLambda.as_tool(

name = "My tool",

description = "Explanation of when to use tool.",

)

responseString = structuredTool.invoke({"a" : 3, "b" : [1, 2]})

print(responseString)

"""

▶ requirements.txt


aiohappyeyeballs==2.4.3
aiohttp==3.10.8
aiosignal==1.3.1
annotated-types==0.7.0
anyio==4.6.0
async-timeout==4.0.3
attrs==24.2.0
certifi==2024.8.30
charset-normalizer==3.3.2
exceptiongroup==1.2.2
frozenlist==1.4.1
greenlet==3.1.1
h11==0.14.0
httpcore==1.0.5
httpx==0.27.2
idna==3.10
jsonpatch==1.33
jsonpointer==3.0.0
langchain==0.3.1
langchain-core==0.3.7
langchain-text-splitters==0.3.0
langsmith==0.1.129
multidict==6.1.0
numpy==1.26.4
orjson==3.10.7
packaging==24.1
pydantic==2.9.2
pydantic_core==2.23.4
PyYAML==6.0.2
requests==2.32.3
sniffio==1.3.1
SQLAlchemy==2.0.35
tenacity==8.5.0
typing_extensions==4.12.2
urllib3==2.2.3
yarl==1.13.1

aiohappyeyeballs==2.4.3

aiohttp==3.10.8

aiosignal==1.3.1

annotated-types==0.7.0

anyio==4.6.0

async-timeout==4.0.3

attrs==24.2.0

certifi==2024.8.30

charset-normalizer==3.3.2

exceptiongroup==1.2.2

frozenlist==1.4.1

greenlet==3.1.1

h11==0.14.0

httpcore==1.0.5

httpx==0.27.2

idna==3.10

jsonpatch==1.33

jsonpointer==3.0.0

langchain==0.3.1

langchain-core==0.3.7

langchain-text-splitters==0.3.0

langsmith==0.1.129

multidict==6.1.0

numpy==1.26.4

orjson==3.10.7

packaging==24.1

pydantic==2.9.2

pydantic_core==2.23.4

PyYAML==6.0.2

requests==2.32.3

sniffio==1.3.1

SQLAlchemy==2.0.35

tenacity==8.5.0

typing_extensions==4.12.2

urllib3==2.2.3

yarl==1.13.1

※ pip install langchain 명령을 실행했다.