def access(request_token, request_token_secret, verifier):
 return get_oauth_service().get_access_token(request_token, request_token_secret, data={'oauth_verifier': verifier})

def access ( request_token , request_token_secret , verifier ) : return get_oauth_service ( ) . get_access_token ( request_token , request_token_secret , data = { 'oauth_verifier' : verifier } )
obtain the refresh token .