Python 日志记录不会关闭

Question

我一直在学习 python 日志记录模块，但在完成后让日志记录关闭时遇到了问题。这是一个例子-

import logging

log = logging.getLogger()
log.setLevel(logging.INFO)
handler = logging.FileHandler('test.log')
handler.setLevel(logging.INFO)
formatter = logging.Formatter(
            fmt='%(asctime)s %(levelname)s: %(message)s',
            datefmt='%Y-%m-%d %H:%M:%S'
            )
handler.setFormatter(formatter)
log.addHandler(handler)

log.info('log file is open')  
logging.shutdown()
log.info('log file should be closed')

但模块在 logging.shutdown() 之后仍在记录，因为日志文件如下所示 -

# cat test.log
2014-07-17 19:39:35 INFO: log file is open
2014-07-17 19:39:35 INFO: log file should be closed

根据文档，此命令应该“通过刷新和关闭所有处理程序来执行有序关闭”。我应该做其他事情来关闭日志文件吗？

Answer 1

所以我发现使用 shutdown() 并没有完全消除用于日志记录的文件处理程序。最好的方法似乎是手动删除文件处理程序 -

def main():
    log = logging.getLogger()
    log.setLevel(logging.INFO)
    fh = logging.FileHandler(filename='test.log')
    fh.setLevel(logging.INFO)
    formatter = logging.Formatter(
                    fmt='%(asctime)s %(levelname)s: %(message)s',
                    datefmt='%Y-%m-%d %H:%M:%S'
                    )
    fh.setFormatter(formatter)
    log.addHandler(fh)

    log.info('-------Start--------')
    log.info('this function is doing something')
    log.info('this function is finished')
    log.removeHandler(fh) <--------------------------Add this line
    del log,fh