def __init__(self, level="INFO", caller_names=("apex", "pycocotools")):
        """
        Args:
            level(str): log level string of loguru. Default value: "INFO".
            caller_names(tuple): caller names of redirected module.
                Default value: (apex, pycocotools).
        """
        self.level = level
        self.linebuf = ""
        self.caller_names = caller_names

        Args:
            level(str): log level string of loguru. Default value: "INFO".
            caller_names(tuple): caller names of redirected module.
                Default value: (apex, pycocotools).
        
yolox/utils/logger.py