Python 函数——logging.basicConfig

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import logginglogging.basicConfig(level=logging.DEBUG,                format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',                datefmt='%a, %d %b %Y %H:%M:%S',                filename='myapp.log',                filemode='w')    logging.debug('This is debug message')logging.info('This is info message')logging.warning('This is warning message')
logging.basicConfig函数各参数:filename: 指定日志文件名filemode: 和file函数意义相同,指定日志文件的打开模式,'w'或'a'format: 指定输出的格式和内容,format可以输出很多有用信息,如上例所示: %(levelno)s: 打印日志级别的数值 %(levelname)s: 打印日志级别名称 %(pathname)s: 打印当前执行程序的路径,其实就是sys.argv[0] %(filename)s: 打印当前执行程序名 %(funcName)s: 打印日志的当前函数 %(lineno)d: 打印日志的当前行号 %(asctime)s: 打印日志的时间 %(thread)d: 打印线程ID %(threadName)s: 打印线程名称 %(process)d: 打印进程ID %(message)s: 打印日志信息datefmt: 指定时间格式,同time.strftime()level: 设置日志级别,默认为logging.WARNINGstream: 指定将日志的输出流,可以指定输出到sys.stderr,sys.stdout或者文件,默认输出到sys.stderr,当stream和filename同时指定时,stream被忽略


例子:

logging.basicConfig(level=logging.DEBUG,                    format='%(asctime)s %(thread)d %(threadName)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',                    datefmt='%a, %d %b %Y %H:%M:%S',                    filename=logfile_path,                    filemode='w')
结果:

Sat, 04 Feb 2017 13:53:15 4296 MainThread ScriptRecorder.py[line:38] DEBUG Start the application.Sat, 04 Feb 2017 13:53:15 4296 MainThread ScriptRecorder.py[line:25] DEBUG Begin class constructor.Sat, 04 Feb 2017 13:53:15 4296 MainThread ScriptRecorder.py[line:29] DEBUG Show the init window.Sat, 04 Feb 2017 13:53:15 4296 MainThread init_window.py[line:18] DEBUG Init window constructor.Sat, 04 Feb 2017 13:53:15 4296 MainThread init_window.py[line:62] DEBUG Get devices count.Sat, 04 Feb 2017 13:53:15 4296 MainThread init_window.py[line:55] DEBUG Get devices list.





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