logging模块的应用

# 1.用来记录用户的行为 - 数据分析
# 2.用来记录用户的行为 - 操作审计
# 3.排查代码中的错误



import logging
# # 输出内容是有等级的 : 默认处理warning级别以上的所有信息
# logging.debug('debug message')          # 调试
# logging.info('info message')            # 信息
# logging.warning('warning message')      # 警告
# logging.error('error message')          # 错误
# logging.critical('critical message')    # 批判性的



# 1.无论你希望日志里打印哪些内容,都得你自己写,没有自动生成日志这种事儿
# logging.basicconfig
# 输出到屏幕
logging.basicConfig(
    format='%(asctime)s - %(name)s - %(levelname)s[line :%(lineno)d]-%(module)s:  %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S %p',
)
logging.warning('warning message test2')
logging.error('error message test2')
logging.critical('critical message test2')
#
# # 输出到文件,并且设置信息的等级
logging.basicConfig(
    format='%(asctime)s - %(name)s - %(levelname)s[line :%(lineno)d]-%(module)s:  %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S %p',
    filename='tmp.log',
    level= logging.DEBUG

)
logging.debug('debug 信息错误 test2')
logging.info('warning 信息错误 test2')
logging.warning('warning message test2')
logging.error('error message test2')
logging.critical('critical message test2')



# 要记住的
# --------------------------------------------------------------------------------------------------
# 同时向文件和屏幕上输出 和 乱码
fh = logging.FileHandler('tmp.log',encoding='utf-8')
# fh2 = logging.FileHandler('tmp2.log',encoding='utf-8')
sh = logging.StreamHandler()
logging.basicConfig(
    format='%(asctime)s - %(name)s - %(levelname)s[line :%(lineno)d]-%(module)s:  %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S %p',
    level= logging.DEBUG,
    # handlers=[fh,sh,fh2]
    handlers=[fh,sh]
)
logging.debug('debug 信息错误 test2')
logging.info('warning 信息错误 test2')
logging.warning('warning message test2')
logging.error('error message test2')
logging.critical('critical message test2')

# 做日志的切分
import time
from logging import handlers
sh = logging.StreamHandler()
rh = handlers.RotatingFileHandler('myapp.log', maxBytes=1024,backupCount=5)   # 按照大小做切割
fh = handlers.TimedRotatingFileHandler(filename='x2.log', when='s', interval=5, encoding='utf-8')
logging.basicConfig(
    format='%(asctime)s - %(name)s - %(levelname)s[line :%(lineno)d]-%(module)s:  %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S %p',
    level = logging.DEBUG,
    # handlers=[fh,sh,fh2]
    handlers=[fh,rh,sh]
)
for i in range(1,100000):
    time.sleep(1)
    logging.error('KeyboardInterrupt error %s'%str(i))