Python雙執行緒互相控制示例

Python雙執行緒互相控制示例

　　Code

import time
import pynput
import threading


# 用於控制迴圈和監聽的全域性變數
running = True


def on_press(key):
    global running
    try:
        if key == pynput.keyboard.Key.esc:
            running = False
    except AttributeError:
        pass


def on_release(key):
    # 停止監聽
    if key == pynput.keyboard.Key.esc:
        return False


def print_loop():
    global running
    for i in range(1000):
        if not running:
            break
        print(i)
        time.sleep(0.000001)
    print("Loop finished or stopped by ESC.")
    # 迴圈結束後，設定running為False以停止鍵盤監聽
    running = False


def listen_keyboard():
    global running
    with pynput.keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
        while running:
            listener.join()


def main():
    # 建立執行緒
    thread1 = threading.Thread(target=listen_keyboard)
    thread2 = threading.Thread(target=print_loop)

    # 啟動執行緒
    thread1.start()
    thread2.start()

    # 等待執行緒結束
    thread1.join()
    thread2.join()


if __name__ == '__main__':
    start_time = time.time()
    main()
    end_time = time.time()
    dur = end_time - start_time
    print('指令碼執行時間是:{:.2f}秒'.format(dur))