python 日志打印
时间：2009-06-29 来源：mseaspring
发现python里面扩展了日志打印功能。感觉比java自带的还好，和log4j很类似。
下面总结下其用法。先说一种不用配置文件的：
<log.py>
下面总结下其用法。先说一种不用配置文件的：
<log.py>
1
# -*- coding: gb2312 -*-
2import logging
3
4logging.basicConfig(level=logging.INFO,
5 format='%(asctime)s %(name)-12s %(levelname)-8s %(message)s',
6 datefmt='%m-%d %H:%M',
7 filename='./AutoUpdate.log',
8 filemode='w')
9
10console = logging.StreamHandler()
11console.setLevel(logging.INFO)
12formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s')
13console.setFormatter(formatter)
14logging.getLogger('').addHandler(console)
15
16
17##
18# console = logging.StreamHandler()
19# console = setLevel(logging.DEBUG)
20# formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s')
21# console.setFormatter(formatter)
22# logging.getLogger('').addHandler(console)
23
24
25def getLogging(name):
26 return logging.getLogger(name)
<test.py>
import log
testlog = log.getLogging('test')
testlog.error( "~~~~~~~~~~~~~~test1.")
testlog.info( "~~~~~~~~~~~~~~test2." )
testlog.exception( "~~~~~~~~~~~~~~~~~~~~~~~~~test3.")
用过log4j的人不会陌生这种用法。如果你对log4j有疑惑，或者想了解请在本人blog内查找关于log4j的文章。有详细介绍。这里不再赘述。
第二种使用配置文件的：
# logging.conf
[loggers]
keys=root,example
[handlers]
keys=consoleHandler,rotateFileHandler
[formatters]
keys=simpleFormatter
[formatter_simpleFormatter]
format=[%(asctime)s](%(levelname)s)%(name)s : %(message)s
[logger_root]
level=DEBUG
handlers=consoleHandler,rotateFileHandler
[logger_example]
level=DEBUG
handlers=consoleHandler,rotateFileHandler
qualname=example
propagate=0
[handler_consoleHandler]
class=StreamHandler
level=DEBUG
formatter=simpleFormatter
args=(sys.stdout,)
[handler_rotateFileHandler]
class=handlers.RotatingFileHandler
level=DEBUG
formatter=simpleFormatter
args=('test.log', 'a', 10000, 9)
<test2.py>
import logging
import logging.config
logging.config.fileConfig("logger.conf")
#create logger
logger = logging.getLogger("example")
#"application" code
logger.debug("debug message")
logger.info("info message")
logger.warn("warn message")
logger.error("error message")
logger.critical("critical message")
logHello = logging.getLogger("hello")
logHello.info("Hello world!")
其中值得注意的是args的含义。
# -*- coding: gb2312 -*-2
import logging3
4
logging.basicConfig(level=logging.INFO,5
format='%(asctime)s %(name)-12s %(levelname)-8s %(message)s',6
datefmt='%m-%d %H:%M',7
filename='./AutoUpdate.log',8
filemode='w')9
10
console = logging.StreamHandler()11
console.setLevel(logging.INFO)12
formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s')13
console.setFormatter(formatter)14
logging.getLogger('').addHandler(console)15
16
17
## 18
# console = logging.StreamHandler()19
# console = setLevel(logging.DEBUG)20
# formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s')21
# console.setFormatter(formatter)22
# logging.getLogger('').addHandler(console)23
24
25
def getLogging(name):26
return logging.getLogger(name)
<test.py>
import logtestlog = log.getLogging('test')testlog.error( "~~~~~~~~~~~~~~test1.")testlog.info( "~~~~~~~~~~~~~~test2." )testlog.exception( "~~~~~~~~~~~~~~~~~~~~~~~~~test3.")
用过log4j的人不会陌生这种用法。如果你对log4j有疑惑，或者想了解请在本人blog内查找关于log4j的文章。有详细介绍。这里不再赘述。
第二种使用配置文件的：
# logging.conf[loggers]keys=root,example[handlers]keys=consoleHandler,rotateFileHandler[formatters]keys=simpleFormatter[formatter_simpleFormatter]format=[%(asctime)s](%(levelname)s)%(name)s : %(message)s[logger_root]level=DEBUGhandlers=consoleHandler,rotateFileHandler[logger_example]level=DEBUGhandlers=consoleHandler,rotateFileHandlerqualname=examplepropagate=0[handler_consoleHandler]class=StreamHandlerlevel=DEBUGformatter=simpleFormatterargs=(sys.stdout,)[handler_rotateFileHandler]class=handlers.RotatingFileHandlerlevel=DEBUGformatter=simpleFormatterargs=('test.log', 'a', 10000, 9)
<test2.py>
import loggingimport logging.configlogging.config.fileConfig("logger.conf")#create loggerlogger = logging.getLogger("example")#"application" codelogger.debug("debug message")logger.info("info message")logger.warn("warn message")logger.error("error message")logger.critical("critical message")logHello = logging.getLogger("hello")logHello.info("Hello world!")
其中值得注意的是args的含义。
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