basic_logger.py

import logging

def get_logger(out_file=None):
    logger = logging.getLogger()
    formatter = logging.Formatter("%(asctime)s - %(levelname)s - %(message)s")
    logger.handlers = []
    logger.setLevel(logging.INFO)
    
    stream_handler = logging.StreamHandler()
    stream_handler.setFormatter(formatter)
    stream_handler.setLevel(logging.INFO)
    logger.addHandler(stream_handler)
    
    if out_file is not None:
        file_handler = logging.FileHandler(out_file)
        file_handler.setFormatter(formatter)
        file_handler.setLevel(logging.INFO)
        logger.addHandler(file_handler)
    
    logger.info("logger set up")
    return logger