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Accepted
KryptonH
Asked:2021-12-27 04:01:09 +0800 CST2021-12-27 04:01:09 +0800 CST

python程序终止时执行代码

  • 772

程序终止后如何代表用户执行代码？例如： os.remove('file.txt')

python

1 个回答

  1. Best Answer

    使用try/finally. 即使发生异常，finally也会执行该块：

    import time

try:
    while True:
        print('press Ctrl-C to stop')
        time.sleep(1)
finally:
    print('\n\nCleanup code is here\n')

    $ python cleanup.py 
press Ctrl-C to stop
press Ctrl-C to stop
press Ctrl-C to stop
^C

Cleanup code is here

Traceback (most recent call last):
  File "cleanup.py", line 7, in <module>
    time.sleep(1)
KeyboardInterrupt

    您可以处理KeyboardInterrupt它，以便异常不会破坏程序结束时的情绪：

    import time

try:
    while True:
        print('press Ctrl-C to stop')
        time.sleep(1)
except KeyboardInterrupt:
    print('\n\nKeyboardInterrupt cleanup code is here')
finally:
    print('\n\nCommon cleanup code is here')

    $ python cleanup.py 
press Ctrl-C to stop
press Ctrl-C to stop
press Ctrl-C to stop
^C

KeyboardInterrupt cleanup code is here


Common cleanup code is here
    • 2

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