LangChain/app/services/qa.py

from langchain_community.llms import Ollama
from langchain.chains import LLMChain
from langchain.prompts import PromptTemplate
import os
from dotenv import load_dotenv

# Load environment variables
load_dotenv()

# Initialize Ollama LLM
llm = Ollama(
    model="mistral",
    temperature=0.7
)

# Define a simple prompt template
prompt = PromptTemplate(
    input_variables=["question"],
    template="Responda à seguinte pergunta: {question}"
)

# Create the LLM chain
chain = LLMChain(llm=llm, prompt=prompt)

def get_answer(question: str) -> str:
    return chain.run(question=question)

if __name__ == "__main__":
    print(get_answer("Qual a capital da França?"))