python日志输出—logging配置文件

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:

#Configuration for log output
#Naiveloafer
#2012-06-04

[loggers]
keys=root,xzs

[handlers]
keys=consoleHandler,fileHandler,rotatingFileHandler

[formatters]
keys=simpleFmt

[logger_root]
level=DEBUG
#handlers=consoleHandler
#handlers=fileHandler
handlers=rotatingFileHandler

[logger_xzs]
level=DEBUG
handlers=rotatingFileHandler
qualname=xzs
propagate=0

[handler_consoleHandler]
class=StreamHandler
level=DEBUG
formatter=simpleFmt
args=(sys.stdout,)

[handler_fileHandler]
class=FileHandler
level=DEBUG
formatter=simpleFmt
args=("../log/p2pplayer.log", "a")

[handler_rotatingFileHandler]
class=handlers.RotatingFileHandler
level=DEBUG
formatter=simpleFmt
args=("../log/p2pplayer.log", "a", 20*1024*1024, 10)


[formatter_simpleFmt]
format=%(asctime)s - %(name)s - %(levelname)s - %(message)s - [%(filename)s:%(lineno)s]
datefmt=

测试代码:

def log_test02():
    import logging
    import logging.config
    CONF_LOG = "../conf/p2pplayer_logging.conf"
    logging.config.fileConfig(CONF_LOG);    # 采用配置文件
    logger = logging.getLogger("xzs")
    logger.debug("Hello xzs")
    
    logger = logging.getLogger()
    logger.info("Hello root")
    
if __name__ == "__main__":
    log_test02()

输出：

2012-06-04 15:28:05,751 - xzs - DEBUG - Hello xzs - [xlog.py:29]
2012-06-04 15:28:05,751 - root - INFO - Hello root - [xlog.py:32]

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%()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.