python日志输出—logging配置文件

分类： python 2012-06-04 15:33 1675人阅读 评论(0) 收藏 举报

loggingpythonclassmoduleimportnumbers

一、logging直接写在代码中

      >>>http://blog.csdn.net/naiveloafer/article/details/7630673

二、通过配置文件来配置输出

配置文件:

[plain] view plaincopy

1. <span style="font-size:18px;">#Configuration for log output  
2. #Naiveloafer  
3. #2012-06-04  
4.   
5. [loggers]  
6. keys=root,xzs  
7.   
8. [handlers]  
9. keys=consoleHandler,fileHandler,rotatingFileHandler  
10.   
11. [formatters]  
12. keys=simpleFmt  
13.   
14. [logger_root]  
15. level=DEBUG  
16. #handlers=consoleHandler  
17. #handlers=fileHandler  
18. handlers=rotatingFileHandler  
19.   
20. [logger_xzs]  
21. level=DEBUG  
22. handlers=rotatingFileHandler  
23. qualname=xzs  
24. propagate=0  
25.   
26. [handler_consoleHandler]  
27. class=StreamHandler  
28. level=DEBUG  
29. formatter=simpleFmt  
30. args=(sys.stdout,)  
31.   
32. [handler_fileHandler]  
33. class=FileHandler  
34. level=DEBUG  
35. formatter=simpleFmt  
36. args=("../log/p2pplayer.log", "a")  
37.   
38. [handler_rotatingFileHandler]  
39. class=handlers.RotatingFileHandler  
40. level=DEBUG  
41. formatter=simpleFmt  
42. args=("../log/p2pplayer.log", "a", 20*1024*1024, 10)  
43.   
44.   
45. [formatter_simpleFmt]  
46. format=%(asctime)s - %(name)s - %(levelname)s - %(message)s - [%(filename)s:%(lineno)s]  
47. datefmt=</span>  

测试代码:

[python] view plaincopy

1. <span style="font-size:18px;">def log_test02():  
2.     import logging  
3.     import logging.config  
4.     CONF_LOG = "../conf/p2pplayer_logging.conf"  
5.     logging.config.fileConfig(CONF_LOG);    # 采用配置文件  
6.     logger = logging.getLogger("xzs")  
7.     logger.debug("Hello xzs")  
8.       
9.     logger = logging.getLogger()  
10.     logger.info("Hello root")  
11.       
12. if __name__ == "__main__":  
13.     log_test02()</span>  

输出：

[sql] view plaincopy

1. <span style="font-size:18px;">2012-06-04 15:28:05,751 - xzs - DEBUG - Hello xzs - [xlog.py:29]  
2. 2012-06-04 15:28:05,751 - root - INFO - Hello root - [xlog.py:32]</span>  

具体就不详细说明了，总之是能够运行的，这个文件配置搞了我两天时间。

特别是class=XXXX要注意！！！

 关于formatter的配置，采用的是%(<dict key>)s的形式，就是字典的关键字替换。提供的关键字包括：

Format	Description
%(name)s	Name of the logger (logging channel).
%(levelno)s	Numeric logging level for the message (DEBUG, INFO, WARNING, ERROR, CRITICAL).
%(levelname)s	Text logging level for the message ('DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL').
%(pathname)s	Full pathname of the source file where the logging call was issued (if available).
%(filename)s	Filename portion of pathname.
%(module)s	Module (name portion of filename).
%(funcName)s	Name of function containing the logging call.
%(lineno)d	Source line number where the logging call was issued (if available).
%(created)f	Time when the LogRecord was created (as returned by time.time()).
%(relativeCreated)d	Time in milliseconds when the LogRecord was created, relative to the time the logging module was loaded.
%(asctime)s	Human-readable time when the LogRecord was created. By default this is of the form “2003-07-08 16:49:45,896” (the numbers after the comma are millisecond portion of the time).
%(msecs)d	Millisecond portion of the time when the LogRecord was created.
%(thread)d	Thread ID (if available).
%(threadName)s	Thread name (if available).
%(process)d	Process ID (if available).
%(message)s	The logged message, computed as msg % args.