utils.py

from langchain_experimental.agents import create_pandas_dataframe_agent
import pandas as pd
from langchain_openai import OpenAI
import os
from langchain_openai import ChatOpenAI


def query_agent(data, query):

    # Parse the CSV file and create a Pandas DataFrame from its contents.
    df = pd.read_csv(data)
    os.environ["OPENAI_API_KEY"]
    llm = ChatOpenAI(model="gpt-4o-mini", temperature=0)
    
    # Create a Pandas DataFrame agent.
    agent = create_pandas_dataframe_agent(llm,df,verbose=True)

    #It takes python code as input and outputs the result. The input python code can be generated from another tool in the LangChain
    return agent.invoke(query)