python之logger

• 方法一

  import logging
  
  logging.basicConfig(level = logging.INFO,format = '%(asctime)s - %(name)s - %(levelname)s - %(message)s')
  logger = logging.getLogger('my logger')
  

• 方法二

  import logging
  
  
  def get_logger(date, log_name):
      """
      :param date:
      :param log_name:
      :return:
      """
      log_file = './log/{}.log'.format(date)
  
      # create logger
      logger = logging.getLogger(log_name)
      if not logger.handlers:
          logger.setLevel(logging.INFO)
       
          # create a handler for write to log
          # fh = logging.FileHandler(log_file)
          # fh.setLevel(logging.INFO)
  
          # create a handler for write to log
          eh = logging.FileHandler(log_file)
          eh.setLevel(logging.ERROR)
       
          # create  a handler for print
          ch = logging.StreamHandler()
          ch.setLevel(logging.INFO)
       
          # format the information for print or write to log
          formatter = logging.Formatter(
           '%(asctime)s - %(name)s - %(levelname)s - %(message)s')
          # fh.setFormatter(formatter)
          ch.setFormatter(formatter)
          eh.setFormatter(formatter)
       
          # add handler to logger
          # logger.addHandler(fh)
          logger.addHandler(ch)
          logger.addHandler(eh)
       
   	# logger.info('test logger info')
      return logger
      # logger.handlers.pop()