Configure the logger with log_level.

def set_logger(self, log_level=logging.INFO):
        """Configure the logger with log_level."""
        logging.basicConfig(
            format='%(asctime)s - %(levelname)s - %(name)s - %(message)s',
            level=log_level,
            stream=sys.stderr)
        self.logger = logging.getLogger(__name__)
        logging.getLogger('requests').setLevel(logging.WARNING)