Is there anyway I can make my script execute one of my functions when Ctrl+c is hit when the script is running?
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See stackoverflow.com/questions/4205317/… for several options.DSM– DSM2011-08-09 01:30:52 +00:00Commented Aug 9, 2011 at 1:30
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3 Answers
Take a look at signal handlers. CTRL-C corresponds to SIGINT (signal #2 on posix systems).
Example:
#!/usr/bin/env python
import signal
import sys
def signal_handler(signal, frame):
print("You pressed Ctrl+C - or killed me with -2")
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
print("Press Ctrl+C")
signal.pause()
3 Comments
wim
note: this one should also hit the signal handler when you go
kill -2 [pid] in the OS
miku
@wim, good point, thanks, added a hint to my answer - is there actually a way to distinguish a kill by keyboard from a kill by kill?
wim
I have seen the former will raise a
KeyboardInterrupt exception in python, the latter won't. But I'm not sure on the implementation details of why this is so.Sure.
try:
# Your normal block of code
except KeyboardInterrupt:
# Your code which is executed when CTRL+C is pressed.
finally:
# Your code which is always executed.
Comments
Use the KeyboardInterrupt exception and call your function in the except block.
