在python中按下一个键时如何停止程序? [英] How to stop a program when a key is pressed in python?
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问题描述
我有一个无限循环的程序,每 5 秒打印一次程序正在运行",我想在按下结束键时停止它.
I have a program that is an endless loop that prints "program running" every 5 seconds and I want to stop it when I press the end key.
因此,我创建了一个键侦听器,如果按下结束键,该侦听器将返回 false.如果我没有无限循环,那应该可行.我希望它即使在无限循环中也能工作.
So I created a key listener that returns false if the end key is pressed. That should work if I won't have the endless loop. And I want it to work even when I'm in the endless loop.
这是我的代码:
from pynput import keyboard
import time
def on_press(key):
print key
if key == keyboard.Key.end:
print 'end pressed'
return False
with keyboard.Listener(on_press=on_press) as listener:
while True:
print 'program running'
time.sleep(5)
listener.join()
推荐答案
from pynput import keyboard
import time
break_program = False
def on_press(key):
global break_program
print (key)
if key == keyboard.Key.end:
print ('end pressed')
break_program = True
return False
with keyboard.Listener(on_press=on_press) as listener:
while break_program == False:
print ('program running')
time.sleep(5)
listener.join()
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