| 1 | #!/usr/bin/env python2
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| 2 | """
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| 3 | keyboard_interrupt.py: How to replace KeyboardInterrupt
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| 4 | """
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| 5 | from __future__ import print_function
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| 6 |
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| 7 | import signal
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| 8 | import sys
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| 9 | import time
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| 10 |
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| 11 |
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| 12 |
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| 13 | g_sigint = False
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| 14 |
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| 15 | def SigInt(x, y):
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| 16 | print('SIGINT')
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| 17 | global g_sigint
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| 18 | g_sigint = True
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| 19 |
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| 20 |
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| 21 | def main(argv):
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| 22 |
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| 23 | # This suppresses KeyboardInterrupt. You can still do Ctrl-\ or check a flag
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| 24 | # and throw your own exception.
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| 25 | old = signal.signal(signal.SIGINT, SigInt)
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| 26 | # We may want to restore the old handler!
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| 27 | print(old)
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| 28 |
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| 29 | while True:
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| 30 | print('----')
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| 31 | time.sleep(0.5)
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| 32 | if g_sigint:
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| 33 | raise Exception('interrupted')
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| 34 |
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| 35 |
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| 36 | if __name__ == '__main__':
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| 37 | try:
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| 38 | main(sys.argv)
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| 39 | except RuntimeError as e:
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| 40 | print('FATAL: %s' % e, file=sys.stderr)
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| 41 | sys.exit(1)
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