custom output when control-c is used to exit python script

问题

I would like the user to use control-c to close a script, but when control-c is pressed it shows the error and reason for close (which make sense). Is there a way to have my own custom output to the screen rather than what is shown? Not sure how to handle that specific error.

回答1:

You could use try..except to catch KeyboardInterrupt:

import time

def main():
    time.sleep(10)

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        print('bye')

回答2:

use the signal module to define a handler for the SIGINT signal:

import signal
import sys

def sigint_handler(signal_number, stack_frame):
    print('caught SIGINT, exiting')
    sys.exit(-1)

signal.signal(signal.SIGINT, sigint_handler)
raw_input('waiting...')

回答3:

For general purpose code, handling the KeyboardInterrupt should suffice. For advanced code, such as threading, it is a whole different story. Here's a simple example.

http://docs.python.org/2/library/exceptions.html#exceptions.KeyboardInterrupt

try:
    while 1:
        x = raw_input("Type something or press CTRL+C to end: ")
        print repr(x)
except KeyboardInterrupt:
    print "\nWe're done here."

来源：https://stackoverflow.com/questions/17533559/custom-output-when-control-c-is-used-to-exit-python-script