How to terminate loop gracefully when CTRL+C was pressed in python

How to terminate loop gracefully when CTRL+C was pressed in python

You can gracefully terminate a loop when CTRL+C (KeyboardInterrupt) is pressed in Python using a try and except block. When you catch a KeyboardInterrupt exception, you can use that as a signal to break out of the loop and perform any necessary cleanup before exiting. Here's an example:

try: while True: # Your loop code here pass except KeyboardInterrupt: print("\nLoop terminated by user.") # Additional cleanup code here

In this example, the loop continues running indefinitely until a KeyboardInterrupt exception is raised by pressing CTRL+C. When the exception is caught, a message is printed, and you can include any additional cleanup code you need.

For more complex scenarios, you might want to encapsulate your loop in a function and handle the KeyboardInterrupt exception there. This allows you to perform more organized cleanup and potentially handle the exception differently in various parts of your program.

Here's an example with a loop function:

def main_loop(): try: while True: # Your loop code here pass except KeyboardInterrupt: print("\nLoop terminated by user.") # Additional cleanup code here if __name__ == "__main__": main_loop()

In this version, the main_loop() function encapsulates the loop, and it can be easily reused across different parts of your program. The if __name__ == "__main__": block ensures that the loop is started when the script is run directly and not when it's imported as a module.

Examples

  1. "Python gracefully terminate loop on CTRL+C"

    • Description: This query seeks methods to gracefully handle keyboard interrupts (CTRL+C) in Python loops, ensuring proper termination without abrupt halts.
    import signal def signal_handler(sig, frame): print('CTRL+C pressed, terminating loop gracefully') # Additional cleanup or termination steps can be added here raise SystemExit signal.signal(signal.SIGINT, signal_handler) while True: # Your loop code here

  2. "Handle keyboard interrupt in Python loop"

    • Description: This search term targets solutions for managing keyboard interrupts specifically within Python loops, offering strategies to handle such interruptions smoothly.
    import sys try: while True: # Your loop code here except KeyboardInterrupt: print("CTRL+C pressed, terminating loop gracefully") # Additional cleanup or termination steps can be added here sys.exit(0)

  3. "Python loop graceful exit on keyboard interrupt"

    • Description: This query delves into methods to gracefully exit Python loops upon receiving a keyboard interrupt, ensuring proper cleanup and termination procedures.
    import sys def main(): try: while True: # Your loop code here except KeyboardInterrupt: print("\nCTRL+C pressed, terminating loop gracefully") # Additional cleanup or termination steps can be added here sys.exit(0) if __name__ == "__main__": main()

  4. "Python handle SIGINT in loop"

    • Description: This search query targets handling SIGINT signals (generated by CTRL+C) within Python loops, offering methods to gracefully manage such interruptions.
    import signal import sys def signal_handler(sig, frame): print('CTRL+C pressed, terminating loop gracefully') # Additional cleanup or termination steps can be added here sys.exit(0) signal.signal(signal.SIGINT, signal_handler) while True: # Your loop code here

  5. "Python graceful loop termination on CTRL+C"

    • Description: This query aims to find ways to gracefully terminate Python loops when CTRL+C is pressed, ensuring that the loop exits cleanly without any abrupt halts.
    import signal def signal_handler(sig, frame): print('CTRL+C pressed, terminating loop gracefully') # Additional cleanup or termination steps can be added here raise SystemExit signal.signal(signal.SIGINT, signal_handler) while True: # Your loop code here

  6. "Python graceful loop exit on keyboard interrupt"

    • Description: This query focuses on achieving a graceful exit from Python loops upon encountering a keyboard interrupt, allowing for proper cleanup and termination.
    import sys def main(): try: while True: # Your loop code here except KeyboardInterrupt: print("\nCTRL+C pressed, terminating loop gracefully") # Additional cleanup or termination steps can be added here sys.exit(0) if __name__ == "__main__": main()

  7. "Handle CTRL+C in Python loop without breaking"

    • Description: This query looks for methods to handle CTRL+C interruptions within Python loops without causing any breaks or disruptions in the loop execution flow.
    import signal def signal_handler(sig, frame): print('CTRL+C pressed, terminating loop gracefully') # Additional cleanup or termination steps can be added here raise SystemExit signal.signal(signal.SIGINT, signal_handler) while True: # Your loop code here

  8. "Python gracefully handle SIGINT in loop"

    • Description: This query aims to find approaches to gracefully handle SIGINT signals (such as those generated by CTRL+C) within Python loops, ensuring smooth termination.
    import signal import sys def signal_handler(sig, frame): print('CTRL+C pressed, terminating loop gracefully') # Additional cleanup or termination steps can be added here sys.exit(0) signal.signal(signal.SIGINT, signal_handler) while True: # Your loop code here

  9. "Python loop exit gracefully on keyboard interrupt"

    • Description: This search query targets achieving a graceful exit from Python loops upon encountering a keyboard interrupt, ensuring proper cleanup and termination.
    import sys def main(): try: while True: # Your loop code here except KeyboardInterrupt: print("\nCTRL+C pressed, terminating loop gracefully") # Additional cleanup or termination steps can be added here sys.exit(0) if __name__ == "__main__": main()

  10. "Handle SIGINT in Python loop without disruption"

    • Description: This query seeks methods to handle SIGINT signals (such as CTRL+C) within Python loops without causing any disruptions or breaks in the loop's execution.
    import signal import sys def signal_handler(sig, frame): print('CTRL+C pressed, terminating loop gracefully') # Additional cleanup or termination steps can be added here sys.exit(0) signal.signal(signal.SIGINT, signal_handler) while True: # Your loop code here

More Tags

azure-cosmosdb-sqlapi autoplay physics sap-fiori db2-400 cloudfiles tasklist device-manager gson android-constraintlayout

More Python Questions

More Chemical reactions Calculators

More Electronics Circuits Calculators

More Animal pregnancy Calculators

More General chemistry Calculators