Python日志记录不会关闭 [英] Python logging wont shutdown

问题描述

我一直在学习python日志记录模块，但是在完成日志记录后一直无法关闭.这是一个示例-

I have been learning the python logging module but have been having problems getting the logging to shutdown after it's done. Here is an example -

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')

但是在logging.shutdown()之后，模块仍在进行日志记录，因为日志文件如下所示-

But the module is stilling logging after the logging.shutdown() as the log file looks like this -

# 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，此命令应通过刷新和关闭所有处理程序来执行有序关闭".我应该做些其他事情来关闭日志文件吗?

According to the documentation this command should "perform an orderly shutdown by flushing and closing all handlers". Should I be doing something else to close the log file ?

推荐答案

因此，我发现使用shutdown()不能完全删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-

So I found that the file handler for logging is not completely going away by using shutdown(). The best way seems to be to manually remove the file handler -

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

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