Ending an infinite while loop
You can try wrapping that code in a try/except block, because keyboard interrupts are just exceptions:
try: while True: IDs2=UpdatePoints(value,IDs2) time.sleep(10)except KeyboardInterrupt: print('interrupted!')
Then you can exit the loop with CTRL-C.
You could use exceptions. But you only should use exceptions for stuff that isn't supposed to happen. So not for this.
That is why I recommand signals:
import sys, signaldef signal_handler(signal, frame): print("\nprogram exiting gracefully") sys.exit(0)signal.signal(signal.SIGINT, signal_handler)
you should put this on the beginning of your program and when you press ctrl+c wherever in your program it will shut down gracefully
Code explanation:
You import sys
and signals
. Then you make a function that executes on exit. sys.exit(0)
stops the programming with exit code 0 (the code that says, everything went good).
When the program get the SIGINT either by ctrl-c or by a kill command in the terminal you program will shutdown gracefully.
I think the easiest solution would be to catch the KeyboardInterrupt when the interrupt key is pressed, and use that to determine when to stop the loop.
except KeyboardInterrupt: break
The disadvantage of looking for this exception is that it may prevent the user from terminating the program while the loop is still running.