python实现log日志的示例代码

源代码：

# coding=utf-8
import logging
import os
import time
LEVELS={'debug':logging.DEBUG,\
 'info':logging.INFO,\
 'warning':logging.WARNING,\
 'error':logging.ERROR,\
 'critical':logging.CRITICAL,}

logger=logging.getLogger()
level='default'
def createFile(filename):
path=filename[0:filename.rfind('/')]
if not os.path.isdir(path):
 os.makedirs(path)
if not os.path.isfile(filename):
#创建并打开一个新文件
 fd = open(filename,mode='w',encoding='utf-8')
 fd.close()
class MyLog:
log_filename='E:/quality/it/pyrequest-master/log/itest.log'
err_filename='E:/quality/it/pyrequest-master/log/err.log'
dateformat='％Y-％m-％d ％H:％M:％S'
logger.setLevel(LEVELS.get(level,logging.NOTSET))
createFile(log_filename)
createFile(err_filename)
#注意文件内容写入时编码格式指定
handler=logging.FileHandler(log_filename,encoding='utf-8')
errhandler=logging.FileHandler(err_filename,encoding='utf-8')
@staticmethod
#静态方法
def debug(log_message):
 setHandler('debug')
 logger.debug("[DEBUG "+getCurrentTime()+"]"+log_message)
 removerhandler('debug')
@staticmethod
def info(log_message):
 setHandler('info')
 logger.info("[INFO "+getCurrentTime()+"]"+log_message)
 removerhandler('info')

@staticmethod
def warning(log_message):
 setHandler('warning')
 logger.warning("[WARNING "+getCurrentTime()+"]"+log_message)
 removerhandler('warning')
@staticmethod
def error(log_message):
 setHandler('error')
 logger.error("[ERROR "+getCurrentTime()+"]"+log_message)
 removerhandler('error')
@staticmethod
def critical(log_message):
 setHandler('critical')
 logger.critical("[CRITICAL "+getCurrentTime()+"]"+log_message)
 removerhandler('critical')
# logger可以看做是一个记录日志的人，对于记录的每个日志，他需要有一套规则，比如记录的格式（formatter），
# 等级（level）等等，这个规则就是handler。使用logger.addHandler(handler)添加多个规则，
# 就可以让一个logger记录多个日志。
def setHandler(level):
if level=='error':
 logger.addHandler(MyLog.errhandler)
#handler=logging.FileHandler(log_filename)
#把logger添加上handler
logger.addHandler(MyLog.handler)
def removerhandler(level):
if level=='error':
 logger.removeHandler(MyLog.errhandler)
logger.removeHandler(MyLog.handler)
def getCurrentTime():
return time.strftime(MyLog.dateformat,time.localtime(time.time()))
if __name__=="__main__":
MyLog.debug("This is debug message")
MyLog.info("This is info message")
MyLog.warning("This is warning message")
MyLog.error("This is error message")
MyLog.critical("This is critical message")

来源：https://blog.csdn.net/zhengshengnan123/article/details/71191814