如何使 while 循环的一个函数每 x 秒执行一次，同时不暂停其余代码？ Python

Question

我 3 个月前才开始学习编程，如果这个问题听起来很愚蠢，我很抱歉。 我在这里尝试做的是让我的计算机每 5 秒单击一次左键，而不会暂停 while 循环，以便它继续读取屏幕。

我尝试使用 time.sleep(5)（但它会暂停该功能），而这个 'py.click(x, y, clicks=2, interval=5)' 也可以做同样的事情。

import numpy as np
from PIL import ImageGrab
import cv2
import time
import pyautogui as py


def screen_record():
    while True:
        printscreen1 = np.array(ImageGrab.grab(bbox=(0, 40, 800, 600)))
        printscreen2 = np.array(ImageGrab.grab(bbox=(0, 40, 800, 600)))
        diff = cv2.absdiff(printscreen1, printscreen2)
        grey = cv2.cvtColor(diff, cv2.COLOR_BGR2GRAY)
        blur = cv2.GaussianBlur(grey, (5, 5), 0)
        _, thresh = cv2.threshold(blur, 20, 255, cv2.THRESH_BINARY)
        dilated = cv2.dilate(thresh, None, iterations=3)
        contours, _ = cv2.findContours(dilated, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
        for contour in contours:
            (x, y, w, h) = cv2.boundingRect(contour)
            if cv2.contourArea(contour) < 700:
                continue
            else:
                # py.click(x, y, clicks=2, interval=5)
                # time.sleep(5)
                cv2.rectangle(printscreen1, (x, y), (x + w, y + h), (0, 255, 0), 2)
        # cv2.drawContours(printscreen1, contours, -1, (0, 255, 0), 2)

        cv2.imshow('feed', printscreen1)

        if cv2.waitKey(25) & 0xFF == ord('q'):
            cv2.destroyAllWindows()
            break


screen_record()

Answer 1

你可以使用例如 threading.Timer

import threading
import time

run = True

def main_loop():
    global run
    while run:
        try:
            time.sleep(1)
            print('main loop')
        except KeyboardInterrupt:
             run = False
             print('main loop FIN')    
             break

def fn_start():
    global run
    if run:
        print('Click')
        s_timer()
    else:
        print('timer FIN')
        return    

def s_timer():
    t = threading.Timer(5.0, fn_start)
    t.start()



s_timer()
main_loop()