python的logging模块输出error日志的堆栈信息

秒速五厘米 2022-12-24 00:53 299阅读 0赞

1、logging error日志常规用法

import sys
    import threading
    import time
    import logging
    from logging.handlers import TimedRotatingFileHandler
    import os
    import shutil
    
    if os.path.exists("./logs"):
        shutil.rmtree("./logs")
    os.makedirs("./logs")
    
    
    def init_log():
        logger = logging.getLogger()
        handler = TimedRotatingFileHandler(filename=os.path.join("./logs", "test.log"), when="MIDNIGHT")
        console_handler = logging.StreamHandler()
        handler.setLevel(logging.DEBUG)
        console_handler.setLevel(logging.DEBUG)
        logging_format = logging.Formatter(
            '%(asctime)s - %(levelname)s - %(process)d - %(thread)d - %(filename)s - %(funcName)s - %(lineno)d - %(message)s')
        handler.setFormatter(logging_format)
        console_handler.setFormatter(logging_format)
        logger.addHandler(handler)
        logger.addHandler(console_handler)
        logger.setLevel(logging.DEBUG)
    
    
    init_log()
    logger = logging.getLogger()
    
    try:
        x = 1.0 / 0
    except Exception as e:
        logger.error(e)

输出结果如下：

**2020-11-26 10:14:51,036 - ERROR - 14704 - 12544 - logger\_error.py - <module> - 40 - float division by zero**

通过上述结果可以知道是发生了除零异常，具体是那段代码，还需要找一找。

2、logging error日志输出异常堆栈信息

输出结果如下：

2020-11-26 10:17:08,394 - ERROR - 8712 - 12292 - logger_error.py - <module> - 40 - float division by zero
    Traceback (most recent call last):
      File "C:/WorkDir/PythonWorkspace/PythonModule/python_logging/logger_error.py", line 38, in <module>
        x = 1.0 / 0
    ZeroDivisionError: float division by zero
    Stack (most recent call last):
      File "C:/WorkDir/PythonWorkspace/PythonModule/python_logging/logger_error.py", line 40, in <module>
        logger.error(e, exc_info=True, stack_info=True)

通过堆栈信息很容易就能定位到出现异常的代码段。