动态调整logging日志级别

import logging
import os


def set_log(log_path):
    log_format = logging.Formatter(fmt='[%(asctime)s][%(module)s][%(levelname)s]: %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
    logger = logging.getLogger('')
    logger.setLevel(logging.DEBUG)

    log_level = logging.INFO
    log_output = logging.StreamHandler()
    log_output.setLevel(log_level)
    log_output.setFormatter(log_format)
    # addHandler是将handler append到一个列表中，因此是有序的
    logger.addHandler(log_output)

    log_level = logging.INFO
    if not os.path.exists(os.path.dirname(log_path)):
        os.makedirs(os.path.dirname(log_path))
    log_file_path = log_path
    log_dir = os.path.dirname(log_file_path)
    if not os.path.isdir(log_dir):
        os.makedirs(log_dir)
    file_log = logging.FileHandler(log_file_path)
    file_log.setLevel(log_level)
    file_log.setFormatter(log_format)
    logger.addHandler(file_log)
    return logger


def main():
    set_log('/data/users/fhu/PycharmProjects/Buildflow/test_demo/test_log.log')
    logging.info('1111111111111111111111')
    # print(len(logging.getLogger().handlers))
    # logging.getLogger().handlers可以获取已配置好的所有handler
    all_handlers = logging.getLogger().handlers
    
    for index, handler in enumerate(all_handlers):
        print(handler)
        print(type(handler))
        if isinstance(handler, logging.StreamHandler):
            print('stream')
        else:
            print('file')
            
    console_handler = all_handlers[0]
    old_level = console_handler.level
    console_handler.setLevel(logging.WARNING)
    logging.info('222222222222222222')
    console_handler.setLevel(old_level)
    logging.info('333333333333333333')


if __name__ == '__main__':
    main()

结果示例：