python定时截屏实现

# python3 author jin xiang
import time
from PIL import ImageGrab
import os

#这里是为了如果找不到png这个目录的情况自己建一个png目录
absPath = os.path.abspath('.')
path = [x for x in os.listdir('.') if os.path.isdir(x)]
# print(path)
if 'png' in path:
  #print('yes')
  pass
else:
 #print('no')
  #创建目录
  pngPath = os.path.join(absPath,'png')
  os.mkdir(pngPath)

#截屏
def Screenshot():
 nowtime = time.strftime('%Y_%m_%d_%H_%M_%S',time.localtime(time.time()))
 print(nowtime)
 # 截屏语句很简单的
  im = ImageGrab.grab()
  # 保存（图个有png路径或者别的路径需要在这个路径下有这个目录，不然报错，所以我前面是做了规避，没路径我就自己建一个）
  im.save(r'png\%s.png' %(nowtime))
while True:  
 print("截图！")
  Screenshot()

  print("暂停")
  print("\n")
  time.sleep(10) #定时10s看一下

import threading
import cv2
global timer
import sys

def shot_img():
  global num
  success, frame = cameraCapture.read()
  path = "H://pythonr"
  cv2.imwrite( path +'a[num]' + '.jpg', frame)
  print(num)
  num += 1
  if num==10:
    cameraCapture.release()
    cv2.destroyAllWindows()
    sys.exit()
  timer = threading.Timer(1, shot_img)
  timer.start()

if __name__ == '__main__':
  num=0
  cameraCapture = cv2.VideoCapture(0)
  timer = threading.Timer(1,shot_img)
  timer.start()