Querying the Database using Python having List of Users and List of SQL Quries

import pandas as pd

import os

import cx_Oracle

df=pd.read_csv('D:\Oracle_Account\DATA\Python_Work\SQL_STMT_Read\SQL_List.csv')

df2=pd.DataFrame()

dfusers=pd.read_csv('D:\Oracle_Account\DATA\Python_Work\SQL_STMT_Read\Rquired_Users.csv',dtype=str)

Userlist = dfusers.OurUsers.values.tolist()

Userlist

res=str(Userlist)[1:-1]

print(res)

type(res)

dsn_tns = cx_Oracle.makedsn('localhost', '1531', 'XE')

conn=cx_Oracle.connect(user='abc', password='def', dsn=dsn_tns)

for i in range(0,3):

    query=df.loc[i,'sql_quries']

    query=query.format(res)

    print(query)

    df2= pd.read_sql(query, conn)

    df2.to_csv("D:\\Oracle_Account\\DATA\Python_Work\\SQL_STMT_Read\\"+str(i)+".csv", index = True, header=True) 

conn.close()