Python日志logging
logging
用于便捷记录日志且线程安全的模块
1、单文件日志
import logging logging.basicConfig(filename='log.log', format='%(asctime)s - %(name)s - %(levelname)s -%(module)s: %(message)s', datefmt='%Y-%m-%d %H:%M:%S %p', level=10) logging.debug('debug') logging.info('info') logging.warning('warning') logging.error('error') logging.critical('critical') logging.log(10,'log')
封装后:
import logging
import logging.handlers
class LogFactory(object):
def __init__(self, filename):
self.filename = filename
self.log = logging.getLogger(self.filename)
self.log.setLevel(logging.DEBUG)
handler = logging.handlers.RotatingFileHandler(self.filename, maxBytes=100*1024*1024, backupCount=1000)
formatter = logging.Formatter('%(asctime)s %(levelname)s: %(threadName)s [%(module)s.%(funcName)s, Line:%(lineno)d] %(message)s')
handler.setFormatter(formatter)
self.log.addHandler(handler)
# self.log.error(msg)
def msg(self, msg):
self.log.info(msg)
if __name__ == '__main__':
log = LogFactory("sm_article.log")
try:
log.msg("Begin to load articles and topics...")
log.msg('HHHHHHHHHHH')
except Exception as e:
log.msg("Load catch error:%s" % e)
import logging # create logger logger = logging.getLogger("simple_example") logger.setLevel(logging.DEBUG) # create console handler and set level to debug ch = logging.StreamHandler() ch.setLevel(logging.DEBUG) # create formatter formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s") # add formatter to ch ch.setFormatter(formatter) # add ch to logger logger.addHandler(ch) # "application" code logger.debug("debug message") logger.info("info message") logger.warn("warn message") logger.error("error message") logger.critical("critical message")
日志等级:
CRITICAL = 50 FATAL = CRITICAL ERROR = 40 WARNING = 30 WARN = WARNING INFO = 20 DEBUG = 10 NOTSET = 0
注:只有【当前写等级】大于【日志等级】时,日志文件才被记录。
日志记录格式:
2、多文件日志
对于上述记录日志的功能,只能将日志记录在单文件中,如果想要设置多个日志文件,logging.basicConfig将无法完成,需要自定义文件和日志操作对象。
# 定义文件 file_1_1 = logging.FileHandler('l1_1.log', 'a') fmt = logging.Formatter(fmt="%(asctime)s - %(name)s - %(levelname)s -%(module)s: %(message)s") file_1_1.setFormatter(fmt) file_1_2 = logging.FileHandler('l1_2.log', 'a') fmt = logging.Formatter() file_1_2.setFormatter(fmt) # 定义日志 logger1 = logging.Logger('s1', level=logging.ERROR) logger1.addHandler(file_1_1) logger1.addHandler(file_1_2) # 写日志 logger1.critical('1111')
# 定义文件 file_2_1 = logging.FileHandler('l2_1.log', 'a') fmt = logging.Formatter() file_2_1.setFormatter(fmt) # 定义日志 logger2 = logging.Logger('s2', level=logging.INFO) logger2.addHandler(file_2_1)
少了一句:
logger2.warning('warning')
如上述创建的两个日志对象
- 当使用【logger1】写日志时,会将相应的内容写入 l1_1.log 和 l1_2.log 文件中
- 当使用【logger2】写日志时,会将相应的内容写入 l2_1.log 文件中
根据时间进行日志切割
import logging import os import logging.handlers class Logger(logging.Logger): """ # my_log = Logger() # # # 输出日志 # # log.info("日志模块消息!") # # log.debug("日志模块调试消息!") # my_log.error("日志模块错误消息!") """ def __init__(self, filename=None): super(Logger, self).__init__(self) # 日志文件名 if filename is None: filename = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), "zk_css.log") self.filename = filename # 创建一个handler,用于写入日志文件 (每天生成1个,保留30天的日志) # fh = logging.handlers.TimedRotatingFileHandler(self.filename, 'D', 1, 5) fh = logging.handlers.WatchedFileHandler(self.filename) fh.suffix = "%Y%m%d-%H%M.log" fh.setLevel(logging.DEBUG) # 定义handler的输出格式 formatter = logging.Formatter( '[%(asctime)s] - %(filename)s [Line:%(lineno)d] - [%(levelname)s]-[thread:%(thread)s]-[process:%(process)s] - [%(message)s]') fh.setFormatter(formatter) # 给logger添加handler self.addHandler(fh) try: logpath = Config().get_content("log")["logpath"] except Exception as e: logpath = "" if os.path.exists(logpath): my_log = Logger(filename=logpath) else: my_log = Logger() my_log.error("adsfadf")
错误日志发邮件
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import logging, logging.handlers
class EncodingFormatter(logging.Formatter):
def __init__(self, fmt, datefmt=None, encoding=None):
logging.Formatter.__init__(self, fmt, datefmt)
self.encoding = encoding
errlog = logging.getLogger()
sh = logging.handlers.SMTPHandler("mail host (smtp host)",
'谁发的',
'发给谁',
"标题",
credentials=('用户名', '密码'),
secure=()
)
errlog.addHandler(sh)
sh.setFormatter(EncodingFormatter('%(message)s', encoding='utf-8'))
errlog.error(u'你收到邮件了吗?')
总结
好吧,我承认我懒得二次更改了,发现自己的也不行,网上别人写的也不是我所需要的,而且千篇一律
最好无奈去看了官方文档,ok懂了,
然,最后总结了方法放在了github上面:https://github.com/renfanzi/Python-Tornado-Template
作者:沐禹辰
出处:http://www.cnblogs.com/renfanzi/
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接。
出处:http://www.cnblogs.com/renfanzi/
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接。