Python-3运行While循环X个时间段

Question

我的程序是为一个raspberry pi项目编写的，在这个项目中，我为用户提供了当他们按下按钮时录制消息的选项。我目前的目标是让一个while循环通过按下按钮然后退出循环来提供录制的选项，如果没有按下它5秒，它就会退出循环。

下面是我的代码：

w = True
while w:
    # if the button on the pi is pressed once this while loop begins,
    if GPIO.input(17) == 0:
        print ("Button Pressed")
        sleep(2)
        print ("Explaining recording instructions")
        pygame.mixer.Sound.play(record_s)
        sleep(8)
        print ("Recording")
        record_audio()
        # Exit the loop once message is recorded by pressing the button once more
        if GPIO.input(17) == 0:
            w = False
    # If the button is not pressed for 5 seconds,
    elif sleep(5):
        print ("No input")
        # Exit the loop
        w= False

我尝试了几种不同的方法，做了大量的谷歌搜索，并查看了类似的问题，但都没有奏效。

Answer 1

def run():
    while True:
    # if the button on the pi is pressed once this while loop begins,
        if GPIO.input(17) == 0:
            print ("Button Pressed")

        print ("Explaining recording instructions")
        pygame.mixer.Sound.play(record_s)
        sleep(8)
        print ("Recording")
        record_audio()
        # Exit the loop once message is recorded by pressing the button once more
        if GPIO.input(17) == 0:
            break

def main():
    t = threading.Thread(target=run)
    t.daemon = True
    t.start()
    time.sleep(5)