import glob import logging import logging.handlers LOG_FILENAME='logging_rotatingfile_example.out' # Set up a specific logger with our desired output level my_logger = logging.getLogger('MyLogger') my_logger.setLevel(logging.DEBUG) # Add the log message handler to the logger handler = logging.handlers.RotatingFileHandler(LOG_FILENAME,             maxBytes=20,             backupCount=5,            ) my_logger.addHandler(handler) # Log some messages for i in range(20):  my_logger.debug('i = %d' % i) # See what files are created  logfiles = glob.glob('%s*' % LOG_FILENAME)  for filename in logfiles:   print filename