Python实现Logger打印功能的方法详解

'''Created on 2017年7月20日Logger工厂，保存每个类的Logger实例'''from slient.bigdata.common.logger import Loggerimport loggingclass LoggerFactory : LOG_FILENAME='bigdata_python.log' #logger保存文件 TYPE = "CONSOLE"     #logger打印类型 #TYPE = "FILE" LEVEL = logging.DEBUG    #logger级别 #LEVEL = logging.INFO loggerDict = {} #对外部开放的Logger调用方法 @staticmethod def getLogger(className) -> Logger:  if className in LoggerFactory.loggerDict.keys() :    logger = LoggerFactory.loggerDict[className]   if not logger :     logger = LoggerFactory.__initLogger(className)  else :    logger = LoggerFactory.__initLogger(className)  return logger #生成Logger实例 @staticmethod def __initLogger(className) -> Logger:   logger = logging.getLogger(className)  # 设置logger的level为DEBUG  logger.setLevel(LoggerFactory.LEVEL)  #设置Logger格式  formatter = logging.Formatter('[%(asctime)s] [%(name)s] [%(levelname)s]: %(message)s')  if LoggerFactory.TYPE == 'CONSOLE' :    # 创建输出日志到控制台的StreamHandler   handler = logging.StreamHandler()  else :    # 创建输出日志到文件Handler   handler = logging.FileHandler(LoggerFactory.LOG_FILENAME)  #添加格式   handler.setFormatter(formatter)  # 给logger添加上handler  logger.addHandler(handler)  localLogger = Logger(logger)  LoggerFactory.loggerDict[className] = localLogger  return localLogger

'''Created on 2017年7月5日日志处理'''import loggingimport stringclass Logger : def __init__(self, logger : logging):  self.logger = logger def info(self, formatStr:string, *objs):  self.logger.info(formatStr.format(*objs)) def debug(self, formatStr:string, *objs):  self.logger.debug(formatStr.format(*objs)) def error(self, formatStr:string, *objs):  self.logger.error(formatStr.format(*objs))

logger = LoggerFactory.getLogger("Test")logger.info("打印log1:{}, 打印log2:{}", 666, "我是log2")

[2017-07-20 16:43:00,821] [Test] [INFO]: 打印log1:666, 打印log2:我是log2