python log

原创已于 2023-08-11 13:52:24 修改 · 243 阅读

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#python #pycharm #开发语言

于 2023-03-22 10:22:15 首次发布

该代码示例展示了如何在Python中配置logging模块，定义不同级别的日志打印，包括设置控制台只显示INFO及以上的日志，以及将DEBUG级别的日志记录到文件demo.log中。

https://apppukyptrl1086.h5.xiaoeknow.com/
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