I am getting Session not opened error while using refinitiv.data

NaveenS · 2025-02-21T16:09:45+00:00

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I am trying to pull some reference data using refinitiv.data via python code but getting Errors: ValueError: Session is not opened. Can't send any request. Can you please help.

Code:

import refinitiv.data as rd
from refinitiv.data.content import fundamental_and_reference

platform_session = rd.session.platform.Definition(
    app_key="XXXXX",
    grant=rd.session.platform.GrantPassword(
        username="XXX",
        password="XXX"
    ),
    signon_control=True   # this will avoid failed token request if you run multiple time you code without closing the session
    ).get_session()
    
rd.session.set_default(platform_session)
rd.open_session()
response = fundamental_and_reference.Definition(
    ["TRI.N", "IBM.N"],
    ["TR.Revenue", "TR.GrossProfit"]
    ).get_data()
    
print(response.data.df)
rd.close_session()

Errors:

An error occurred while requesting URL('http://localhost:9001/api/status').
ConnectError('[WinError 10061] No connection could be made because the target machine actively refused it')
An error occurred while requesting URL('http://localhost:9000/api/status').
RemoteProtocolError('Server disconnected without sending a response.')
An error occurred while requesting URL('http://localhost:9060/api/status').
ConnectError('[WinError 10061] No connection could be made because the target machine actively refused it')
Error: no proxy address identified.
Check if Desktop is running.

ValueError: Session is not opened. Can't send any request

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wasin.w

Hello @NaveenS

I can replicate the same issue with both Data Library version 1 (refinitiv-data) and Data library version 2 (lseg-data) .

It seems the code needs the Session object as follows:

import os

from dotenv import dotenv_values

import lseg.data as ld

from lseg.data import session

from lseg.data.content import fundamental_and_reference


config = dotenv_values(".env")


if __name__=='__main__':

    try:

        session = ld.session.platform.Definition(

            app_key = config['APP-KEY'], 

            grant = ld.session.platform.GrantPassword(

                username = config['USERNAME'], 

                password = config['PASSWORD']

            ),

            signon_control=True

        ).get_session()

        session.open()

        print(f'Session Status: {session.open_state}')

        if str(session.open_state) == 'OpenState.Opened':

            ld.session.set_default(session)

            response = fundamental_and_reference.Definition(

                universe= ["TRI.N", "IBM.N"],

                fields=["TR.Revenue", "TR.GrossProfit"]

            ).get_data()

            print(response.data.df)

    except Exception as exp:

        print(f'Exception {exp}')

    finally:

        ld.close_session()

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