Unable to authenticate using Python adwords library

Hi All, I am following the instruction from the link: https://developers.google.com/adwords/api/docs/first-request here. But I am stuck in the first step itself. In python the documentation states to authenticate use the snippet 1. from adspygoogle.adwords.AdWordsClient

Unable to authenticate using OAuth 2.0

I am trying to use the google adwords Python library and for authentication I am using the client_secrets.json, which I have downloaded from here: https://code.google.com/apis/console/ All the examples I have found in python use the following line for authentication: client = AdWordsClient(p