__init__.py 文件源码

def _get_credentials(self, config):
        """Gets valid user credentials from storage.

        If nothing has been stored, or if the stored credentials are invalid,
        the OAuth2 flow is completed to obtain the new credentials.

        Returns:
            Credentials, the obtained credential.
        """

        store = oauth2client.contrib.dictionary_storage.DictionaryStorage(config, 'oauth2')
        credentials = store.get()
        if not credentials or credentials.invalid:
            print("Ask credentials for " + config['user_id'])
            flow = client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
            flow.user_agent = APPLICATION_NAME

            parser = argparse.ArgumentParser(add_help=False)
            parser.add_argument('--logging_level', default='ERROR')
            parser.add_argument('--noauth_local_webserver', action='store_true',
                default=True, help='Do not run a local web server.')
            args = parser.parse_args([])
            credentials = tools.run_flow(flow, store, args)
            config.save()
        return credentials