如果RotatingFileHandler没有maxBytes，我可能足够使用，然后调用doRollover()应用程序启动。
是的，似乎工作正常。下面的代码将在每次运行应用程序时创建一个新的日志文件，并为日志的开始和关闭时间添加时间戳。运行它将打印可用日志文件的列表。您可以检查它们以检查正确的行为。改编自Python docs示例：
import os
import glob
import logging
import logging.handlers
import time
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)
# Check if log exists and should therefore be rolled
needRoll = os.path.isfile(LOG_FILENAME)
# Add the log message handler to the logger
handler = logging.handlers.RotatingFileHandler(LOG_FILENAME, backupCount=50)
my_logger.addHandler(handler)
# This is a stale log, so roll it
if needRoll:
# Add timestamp
my_logger.debug('\n---------\nLog closed on %s.\n---------\n' % time.asctime())
# Roll over on application start
my_logger.handlers[0].doRollover()
# Add timestamp
my_logger.debug('\n---------\nLog started on %s.\n---------\n' % time.asctime())
# Log some messages
for i in xrange(20):
my_logger.debug('i = %d' % i)
# See what files are created
logfiles = glob.glob('%s*' % LOG_FILENAME)
print '\n'.join(logfiles)
602392714
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