import logging
import os
import sys
# 2023-03-22 10:03:18,402 demo-app[Info][demo.py-34]: python log demo test
def log_config(name):# log 打印级别logging.addLevelName(logging.DEBUG, 'DEBUG')logging.addLevelName(logging.ERROR, 'ERROR')logging.addLevelName(logging.INFO, 'INFO')logging.addLevelName(logging.WARNING, 'WARN')logging.addLevelName(logging.WARN, 'WARN')logger = logging.getLogger(name)# 管理日志级别logger.setLevel(logging.DEBUG)# 日志格式打印formatter = logging.Formatter("%(asctime)s %(name)s[%(levelname)s]: %(message)s")file_formatter = logging.Formatter("%(asctime)s %(name)s[%(levelname)s][%(filename)s-%(lineno)d]: %(message)s")# 控制台只打印 INFO 级别日志handler = logging.StreamHandler(sys.stdout)handler.setFormatter(formatter)handler.setLevel(logging.INFO)logger.addHandler(handler)# 记录到 log 日志文件里面的日志级别dir_path = os.sep.join(os.path.realpath(__file__).split(os.sep)[:-2])log_file = os.path.join(dir_path, "demo.log")log_path_handler = logging.FileHandler(log_file)log_path_handler.setFormatter(file_formatter)log_path_handler.setLevel(logging.DEBUG)logger.addHandler(log_path_handler)return logger
# 获取一个日志打印对象
customlogger = log_config("demo-app")
customlogger.info("python log demo test")
customlogger.debug("python log demo test")
customlogger.warning("python log demo test")

执行测试

控制台：

2023-03-22 10:16:08,136 demo-app[INFO]: python log demo test
2023-03-22 10:16:08,137 demo-app[WARN]: python log demo test

日志文件 demo.log:

2023-03-22 10:16:08,136 demo-app[INFO][log_config.py-33]: python log demo test
2023-03-22 10:16:08,137 demo-app[DEBUG][log_config.py-34]: python log demo test
2023-03-22 10:16:08,137 demo-app[WARN][log_config.py-35]: python log demo test