I have been trying for youtube content api and tried with the following code
def main():
credentials = ServiceAccountCredentials.from_json_keyfile_name(
filename='bbtv-306609-b20e12d67493.json',
scopes=['https://www.googleapis.com/auth/youtubepartner',
'https://www.googleapis.com/auth/youtube.force-ssl',
'https://www.googleapis.com/auth/youtubepartner'])
http = httplib2.Http()
http = credentials.authorize(http)
service = build("youtubePartner", version="v1", http=http)
And i have added the following user under members

