Oauth token HTTP header is malformed. in python official library issue

Hello, I have recently started work with the Google Ads client libraries and I picked the Python library. I want to update the click conversion by using the offline example of code and I will try all to possible ways with different approaches, and getting the same error "Oauth token HTTP header

Re: AdWords API Don't need to add clients to MCC in v2009

MCC account not required -- If you use the login/password of the account to get your authentication token, then you can access the account directly (no MCC link needed). Don't set clientEmail or customerId in the soap headers in that case. On Wednesday, March 24, 2010