Hotkey to stop script - Python-CodePudding

Am trying to create a hotkey to stop my script, this is my code so far.

import time
import keyboard

running = True

def stop(event):  
    global running
    running = False
    print("stop")

  
# press ctrl esc to stop the script 
keyboard.add_hotkey("ctrl esc", lambda: stop)
  
while running:
    time.sleep(2)
    print("Hello")
    time.sleep(2)

CodePudding user response：

add_hotkey expects a callback as the second argument, so you must pass it the stop function, on the other hand, when the callback is invoked, no event is passed.

A better solution than using a boolean variable is to use threading.Event since this is thread-safe since the callback is invoked in a secondary thread.

import threading
import time

import keyboard


event = threading.Event()

def stop():
    event.set()
    print("stop")

keyboard.add_hotkey("ctrl esc", stop)

while not event.is_set():
    time.sleep(2)
    print("Hello")
    time.sleep(2)