Google Adwords auth error #1

Traceback (most recent call last):
  File "./adstest.py", line 57, in <module>
    variation_lists = keyword_tool_service.Get(selector)
  File "/path/to/virtualenv/lib/python2.5/site-packages/adspygoogle/adwords/TargetingIdeaService.py", line 74, in Get
    (selector))
  File "/path/to/virtualenv/lib/python2.5/site-packages/adspygoogle/adwords/AdWordsWebService.py", line 255, in CallMethod
    self.__ManageSoap(buf, start_time, stop_time, error)
  File "/path/to/virtualenv/lib/python2.5/site-packages/adspygoogle/adwords/AdWordsWebService.py", line 125, in __ManageSoap
    raise e
adspygoogle.adwords.AdWordsErrors.AdWordsAuthenticationError: AuthenticationError.NOT_ADS_USER @ ; trigger:'636637706820' Service[TargetingIdeaService.get]